Question:
A coil has 1,000 turns and $500 \,cm^2$ as its area, The plane of the coil is placed at right angles a magnetic induction field of $2 \times 10^{-5}\,web/m^2$ The coil is rotated through 180$^\circ$ in 0:2 seconds. The average emf induced in the coil, in milli volts, is:
A coil has 1,000 turns and $500 \,cm^2$ as its area, The plane of the coil is placed at right angles a magnetic induction field of $2 \times 10^{-5}\,web/m^2$ The coil is rotated through 180$^\circ$ in 0:2 seconds. The average emf induced in the coil, in milli volts, is:
Updated On: Jul 5, 2022
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The Correct Option is B
Solution and Explanation
$e = \frac{2NBA}{t}$
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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