Question:
At a place earth's magnetic field $5 \times 10^{5} Wb / m ^{2}$ is acting perpendicular to a coil of radius $R=5 \,cm$. If $\mu_{0} / 4 \pi=10^{-7}$, then how much current is induced in circular loop?
At a place earth's magnetic field $5 \times 10^{5} Wb / m ^{2}$ is acting perpendicular to a coil of radius $R=5 \,cm$. If $\mu_{0} / 4 \pi=10^{-7}$, then how much current is induced in circular loop?
Updated On: Jul 2, 2022
- 0.2 A
- 0 A
- 4 A
- 40 A
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The Correct Option is B
Solution and Explanation
As the earth?s magnetic field is acting perpendicular to the coil and as here is no charge of magnetic flux through the coil, the current induced in the coil is zero.
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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