| ⇦ | 
| ⇨ |
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)]
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically.
- Efficiency of a Carnot engine is 50% when temperature of sink is 500K. In order
- A body is thrown vertically upward in air when air resistance is taken into account
- A car is moving in a circular horizontal track of radius 10.0 m with a constant speed
- In the series resonance the value of impedence is 3 Ω and the resistance is 4Ω,
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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