Question:
Only a change in magnetic flux will maintain an induced current in the coil.
The presence of large magnetic flux through a coil maintains a current in the coil if the circuit is continuous.
Only a change in magnetic flux will maintain an induced current in the coil.
The presence of large magnetic flux through a coil maintains a current in the coil if the circuit is continuous.
Updated On: Jul 28, 2022
- If both A and R are true, and R is a correct explanation of the A
- If both A and R are true, but R is not a correct explanation of the A
- If A is true, but R is false
- If both A and R are false
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The Correct Option is C
Solution and Explanation
Induced current (emf) in a coil is directly propertional to the rate of change of magnetic flux linked with the coil. If there is no change in the flux, there is no induced current also.
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Concepts Used:
Electromagnetic Induction
Electromagnetic Induction is a current produced by the voltage production due to a changing magnetic field. This happens in one of the two conditions:-
- When we place the conductor in a changing magnetic field.
- When the conductor constantly moves in a stationary field.
Formula:
The electromagnetic induction is mathematically represented as:-
e=N × d∅.dt
Where
- e = induced voltage
- N = number of turns in the coil
- Φ = Magnetic flux (This is the amount of magnetic field present on the surface)
- t = time
Applications of Electromagnetic Induction
- Electromagnetic induction in AC generator
- Electrical Transformers
- Magnetic Flow Meter