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JEE Main Physics Class 12 Alternating Currents Part 1 Questions

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Question : 58

Total: 100

A small circular loop of wire of radius a is located at the centre of a much larger circular wire loop of radius b. The two loops are in the same plane. The outer loop of radius b carries an alternating current I=I0‌cos(ωt). The emf induced in the smaller inner loop is nearly:

[Online April 8, 2017]

πµ0I0
2
.
a2
b
ω‌sin(ωt)
πµ0I0
2
.
a2
b
ω‌cos(ωt)
πµ0I0
a2
b
ω‌sin(ωt)
πµ0I0b2
a
ω‌cos(ωt)

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