Question

calculate the inductance of a coil having 500 turns and of radius 16 cms what will be average induced EMF in it if the current changes from 0 to 4 ampere in 0.5 seconds?​

Answer 1

Given that,

Number of turns N=500

Self inductance L=50×10

−3

H

Current I=8×10

−3

A

The magnetic flux through an inductor is the self inductance of coil times the current through it.

The flux is

ϕ=LI

ϕ=50×10

−3

×8×10

−3

ϕ=4×10

−4

Wb

So, the magnetic flux is 4×10

−4

Wb

Hence, A is correct option.

Answer 2

Answer:

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