Question

A planar loops of wire rotates in a uniform magnetic field. Initially, at , the plane of the loop is perpendicular to the magnetic field. If it rotates with a period of about an axis in its plane then the magnitude of induced emf will be maximum and minimum, respectively at :

A

and

B

and

C

and

D

  and

Hard
JEE Mains
Updated on : 2022-09-05
Solution
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Correct option is C)

Time period,
Ref. image I

Axis of rotation y-axis.


ref. image II
at some time t, area vector makes angle '' with .
flux,


emf,


When

So,    n = integes 

When

So, , n = integes

for






for




So, possible option is option (C).

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