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विद्युत चुम्बकीय प्रेरण in One Shot | कक्षा 12वी /JEE /NEET | Electromagnetics Induction

PW - Hindi Medium・172 minutes read

The text discusses electromagnetic induction, emphasizing the importance of understanding the process, calculations, and concepts such as induced EMF and magnetic fields to determine polarity. It also covers self-inductance, mutual induction, and how changes in magnetic flux impact induced electricity, providing practical examples and formulas for calculations.

Insights

Understanding the concept of induced EMF in a conductor moving in a magnetic field is crucial for generating potential difference.
The direction of electric and magnetic fields plays a significant role in determining the polarity of induced EMF.
Calculating induced EMF involves considering the velocity of electrons, magnetic field strength, and length of the conductor.
The significance of effective length in calculating induced EMF and the vector nature of induced quantities are essential concepts.
The relationship between electric and magnetic forces in induced EMF highlights the equilibrium necessary for proper understanding.

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Recent questions

What is the concept of induced EMF?
Induced EMF is generated in a conductor moving in a magnetic field, creating potential difference.
How is induced EMF calculated?
Induced EMF is calculated based on the velocity of electrons, magnetic field strength, and conductor length.
Why is understanding the direction of fields important?
Understanding field directions determines the polarity of induced EMF and effective length calculations.
What is the significance of B cross B technique?
B cross B simplifies solving questions related to magnetic fields and induced EMF.
How does the effective length impact induced EMF?
Effective length perpendicular to magnetic field lines is crucial in determining induced EMF.

Related videos

Summary

00:00

"Mastering Goals Amid Challenges: Electromagnetic Induction Explained"

The text discusses the importance of staying focused on one's goals and dreams, despite facing difficulties along the way.
It introduces the topic of electromagnetic induction in a children's story lecture.
Explains how a conductor rod in a magnetic field generates potential difference, leading to induced EMF.
Describes the process of induced EMF in a conductor moving in a magnetic field, resulting in potential difference.
Details the formation of a battery through induced EMF, with one end at high potential and the other at low potential.
Illustrates the concept of induced electric field due to the movement of electrons in a conductor in a magnetic field.
Discusses the equilibrium between electric and magnetic forces in induced EMF.
Calculates the induced EMF in a conductor based on the velocity of electrons, magnetic field strength, and length of the conductor.
Emphasizes the importance of understanding the direction of electric and magnetic fields in determining the polarity of induced EMF.
Concludes by highlighting the significance of effective length in calculating induced EMF and the vector nature of induced quantities.

20:31

Mastering Magnetic Field Induced EMF Techniques

Simplify the technique to solve questions by understanding the concept of B cross B.
Determine the direction of the magnetic field by using the technique of B cross B.
Calculate the induced EMF by considering the product of B and L vectors.
Understand the direction of B by visualizing it towards the fingers.
Determine the angle between B and L vectors by subtracting θ from 90°.
Calculate the magnitude of induced EMF using the formula involving B, L, and θ.
Ensure that magnetic field lines are being cut to induce EMF.
Identify the effective length perpendicular to the magnetic field lines for inducing EMF.
Analyze the components of the road length to determine if magnetic field lines are being cut.
Consider the perpendicular length of the road to ascertain if magnetic field lines are being intersected.

41:07

Understanding Induced EMF in Circuits and Fields

The slider will move inside, affecting the Indus Ka Man.
Induced electrical department is discussed in relation to magnetic hair lines.
The concept of magnetic hair lines being cut or not is explored.
The process of making a circuit with resistances R1 and R2 is detailed.
The battery setup and calculation of total resistance for current flow are explained.
Polarity and direction of magnetic hair lines are crucial in understanding induced EMF.
The importance of effective length in cutting magnetic hair lines is emphasized.
The concept of rolling motion and induced EMF in different scenarios is discussed.
The significance of the direction of magnetic fields in determining the cutting of hair lines is highlighted.
The effective length perpendicular to the magnetic field for inducing EMF is explained.

01:02:28

Battery parts and potential difference explained

The length is 12 and the diameter is equal to 6.
The parts will become a battery if cut at a short distance.
The battery will be made from the first part B.
The vertical length of the back is discussed.
The length of the child is 2r.
The battery is connected with positive and negative ends.
The battery consumed is equal to the opposite.
The net induced emf is zero.
The potential difference between points P and K is not zero.
The induced emf is BLV.

01:26:15

Creating Magnetic Fields: Understanding Growth and Opposition

To create a field, one must consider the dot increasing and how to broaden it.
The loop's field creation process involves understanding the dot's growth and the need to create a cross field.
The magnetic field's creation involves determining the direction of the current, which should be anti-clockwise.
Understanding the concept of flux and its relation to the magnetic field is crucial.
The loop's radius and the fixed values of A and cos theta play a significant role in field creation.
Changes in B and flux induce inspiration and influence the direction of the current.
To oppose a decreasing field, one must create a cross field to maintain stability.
The analogy of a tank filled with water illustrates the concept of opposing a decrease in field strength.
The loop's field will oppose a decrease by creating a cross field to maintain equilibrium.
Shrinking the loop reduces the magnetic field, prompting the loop to oppose this reduction by creating a dot field.

01:45:06

"Loop, Resistance, and Acceleration in Circuits"

Loop expands if the magnetic field expands
Magnetic hairlines passing through the loop determine the induced electromotive force
Resistance is created by crossing magnetic field lines
Increasing the loop's area leads to increased induced electromotive force
Understanding the mechanics of creating resistance in a circuit is crucial
Calculating resistance in a circuit involves specific steps and formulas
Integration is used to determine the terminal velocity in the circuit
Differentiation is applied to calculate the acceleration in the circuit
The acceleration in the circuit remains constant due to fixed parameters
Continuous growth in acceleration signifies a stable circuit operation

02:07:45

"Induced Current from Rotating Magnetic Fields"

Induced electricity does not come when a loop is rotated past its diameter.
Magnetic field lines go inside the loop when it is rotated diametrically.
Magnetic field lines will emerge from the loop when it is rotated.
Changes in magnetic flux lead to induced electricity.
The induced electromotive force is calculated using the formula A_indus = c x b x l.
The effective length of a rotating rod is crucial in determining induced current.
The magnitude of the current carrying hair is influenced by the effective length of the rod.
The direction of the magnetic field affects the induced electric field in a metal rod.
The potential difference in a metallic square loop determines the induced electric field.
Induced electric current is generated when magnetic field lines are cut.

02:23:46

"Understanding Self-Inductance in Electromagnetism"

Chhadapaan involves cutting lines with electric hair, ensuring no intersection and one component moving.
Magnetic hair lines are not cut by the component with magnetic hair lines.
Induced electric carrier hair results in electric field in both Ed and E.
A long hollow cylindrical wire with a fixed magnet parallel to the field induces electric current on the cylinder's surface.
Self-inductance, or self-induction, occurs when current changes in a coil, leading to induced current due to magnetic flux changes.
A small loop with radius r and current i has a magnetic field at the center of μnot i / 2r.
Self-inductance is proportional to the discharge in the loop, with L representing self-inductance.
The method to find self-inductance involves writing the equation and solving for L.
Self-inductance is a constant proportional to the current, denoted as L.
Applications of self-inductance include determining the self-induction of a plane coil.

02:41:32

Understanding Self-Inductance and Horoscope Characteristics

The text discusses the concept of self-inductance in a child, focusing on finding the inductance (L).
It delves into the characteristics of different types of horoscopes, such as small and cuckoo horoscopes.
The text explores the generation of current in one turn of a cuckoo and the flow of current in one round.
It mentions the significance of kulfire in the horoscope and the calculation of the area of a loop.
The text emphasizes the importance of understanding the area of a circle and the total area of a loop.
It discusses the calculation of the area of a face and the inspiration coefficient (μknot).
The text explains the process of finding the length (L) in terms of the number of turns (n) and the dream coefficient.
It details the induction process, induced current, and the role of an external battery in changing current flow.
The text provides a practical example involving 240 turns and a 12 cm long section of a solenoid with a radius of 2 cm.
It concludes by discussing the concept of loops, magnetic fields, and the impact of changes in current flow on the magnetic field.

03:01:34

Understanding Mutual Induction in Magnetic Fields

The text discusses the concept of magnetic flux passing through loops in a circuit.
It mentions the importance of understanding the area through which the magnetic flux is passing.
The text delves into the magnetic field of loop two and the current flowing through it.
It explains the significance of current in inducing a magnetic field and the resulting flux.
Mutual flux and mutual induction are highlighted as key concepts in the text.
The text emphasizes the impact of changing current on magnetic fields and induction.
It discusses the relationship between two loops and the flux passing through them.
The concept of mutual inductance and its relation to current in different loops is explained.
The text touches on the impact of configuration and proximity on induced current.
It concludes with a metaphorical story about the effects of mutual induction and proximity in a humorous context.

03:21:04

Understanding Flux and Mutual Inductance in Coils

The flux on the current flow coil is equal to two flux passing through stream type one in two important flux coils.
Understanding the application's vital role in solving the problem of flux passing through different loops.
Explaining the process of determining the flux passing through specific loops based on current flow and magnetic field.
Emphasizing the importance of the loop's area and the magnetic field in calculating the flux passing through it.
Discussing the significance of the magnetic field at the center of the loop and its impact on flux calculations.
Exploring the concept of mutual inductance and its dependence on the number of loops, cross-section area, and distance between coils.
Defining the coupling coefficient and its range from zero to one, indicating perfect coupling and different coupling scenarios.
Analyzing the effects of coupling coefficient on the flux and mutual inductance between coils.
Describing the parallel combination of coils and the impact of coupling on their effective inductance.
Detailing the series combination of coils based on mutual inductance values and current direction, highlighting the calculation process for effective inductance.

03:38:19

"Relationships Between Currents and Inductance Calculations"

The text discusses the relationship between currents in the same and opposite directions in two stories.
When currents flow in the same direction, the resistance is calculated as 1 / L1 + 1 / L2.
In the case of currents flowing in opposite directions, the resistance is determined as 1 / L = 1 / L1 + M + 1 / L2.
The coupling coefficient is found to be in the root of L1 L2.
The inductance of each coil is determined by the mutual flux M = 5 * μ0 * Square of R1 / R.
The mutual flux is calculated as miu note i / van area.
The magnetic field inside the coils is found by considering the number of turns and the area.
The energy stored in an inductor is discussed, with the energy density being related to the magnetic field.
The energy density is calculated as B² / μ² * n², where B is the magnetic field strength and n is the number of turns.
The inductance L is determined by mu not n² * A / l, where A is the area and l is the length of the solenoid.

03:58:18

"Electromagnetic Energy, Volume, and Flux Analysis"

The child is left with very little electromagnetic wave energy.
The volume is calculated as half B^2.
Energy density is discussed in relation to the magnetic field.
Alcohol and Alex have disappeared from the posts.
The potential difference is decreasing at a certain rate.
The inductor is converted into a battery to increase the current.
The flux passing through two coils at a distance is analyzed.
The energy of a coil is calculated based on current changes.
The magnitude of flux passing through a coil due to a change in magnetic flux is determined.
The charge flowing in a loop due to the change in flux is calculated.

04:17:05

"Delta 5: Key Memory Aid Formula"

The only person met within a 2.5-hour interval was from Delta, with Delta Phi equaling Delta 5, calculated as Delta 5 = Delta K * R, resulting in Delta 5 = 250 when R is 100 ohms. The unit for this value is hove, representing the flux change divided by R. This concept will be further discussed in the next reading, emphasizing that Delta 5 = Delta K * R, with the formula being a key memory aid.

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