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The self induced e.m.f. in a 0.1 H coil when the current in it is changing at the rate of 200 amp/sec is
Options
(a) 8×10⁻⁴ V
(b) 8×10⁻⁵ V
(c) 20 V
(d) 125 V
Correct Answer:
20 V
Explanation:
e = – L (dI / dt), Magnitude of e = L (dI / dt) = 0.1 × 200 = 20 V
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- Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each.
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A bomb of mass 16 kg at rest explodes into two pieces of masses of 4 kg and 12 kg.
- Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each.
- The escape velocity of a body on an imaginary planet which is thrice the radius
- An object is projected with a velocity of 20 m/s making an angle of 45⁰ with horizontal.
- In the given (V – T) diagram, what is the relation between pressure P₁ and P₂?
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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