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The current through an inductor changes from 3 A to 2 A is 1 m/s. If induced e.m.f. in inductor is 5V then L is
Options
(a) 5×10⁻² H
(b) 5×10⁻³ H
(c) 2.5×10⁻³ H
(d) None of these
Correct Answer:
5×10⁻³ H
Explanation:
– L (di / dt) = ε ⇒ L × [(3A – 2A) / (i × 10⁻³s)] = 5 V
Therefore, L = 5 × 10⁻³ H
Related Questions: - The transverse nature of electromagnetic waves is proved by which of the following?
- Copper and carbon wires are connected in series and the combined resistor is kept
- A 70 kg man stands in contact against the inner wall of a hollow cylindrical drum
- A common emitter amplifier gives an output of 3 V for an input of 0.01 V.
- If alternating source of primary coil on transformer is replaced by a Laclanche cell
Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The transverse nature of electromagnetic waves is proved by which of the following?
- Copper and carbon wires are connected in series and the combined resistor is kept
- A 70 kg man stands in contact against the inner wall of a hollow cylindrical drum
- A common emitter amplifier gives an output of 3 V for an input of 0.01 V.
- If alternating source of primary coil on transformer is replaced by a Laclanche cell
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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