A coil having ‘N’ turns is rotated in a uniform magnetic field B⃗ with constant angular velocity
“”. Find how much e.m.f. is induced in the coil.
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Answer:
Correct option is
A
nBAω
Given, a coil of N turns an area A, rotated with angular speed ω in a uniform magnetic field B.
The flux linking to the coil, ϕ=NBA sin(ωt)
Therefore,
Induced EMF, E=d (NBA sin(ωt))/dt)
E= NBA ω
Emax= NBA ω
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