Navigate

The phase difference between the flux linked with a coil rotating in a uniform

The phase difference between the flux linked with a coil rotating in a uniform magnetic field and induced emf produced in it is

Options

(a) π/2
(b) π/3
(c) (-π/6)
(d) π

Correct Answer:

π/2

Explanation:

The flux ɸ = B.A = |B| |A| cos θ

Also, induced emf, ε = – (dɸ / dt) = (d |B| |A| cos θ) / dt

= – |B| |A| [d cos θ / dt] = |B| |A| sin θ. ω

ε = BA ω cos [θ – (π / 2)]

AIIMS2015
admin:

Related Questions

  1. Energy stored in the coil of a self inductance 40 mH carrying a steady current of 2A
  2. A rocket with a lift-off mass 3.5 x 10⁴ kg is blasted upwards with an initial acceleration
  3. A thin film of soap solution (n=1.4) lies on the top of a glass plate (n=1.5).
  4. In which case positive work has to be done in seperating them?
  5. A spring balance is attched to the ceiling of lift.A man hangs his bag on the string