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A coil of resistance 10 Ω and an inductance 5 H is connected to a 100 volt battery. The energy stored in the coil is
Options
(a) 250 erg
(b) 250 J
(c) 125 erg
(d) 125 J
Correct Answer:
250 J
Explanation:
Energy U = (1/2) LI²
= (1/2) × 5 × (100/10)² = 250 J
Related Questions: - A 50Hz AC signal is applied in a circuit of inductance of (1/π)H and resistance 2100Ω
- If the minimum energy of photons needed to produce photoelectrons is 3 eV,
- A bar magnet of moment M and pole strength m is cut into parts of equal lengths.
- Two balls of mass m₁ and m₂ are separated from each other by powder charge
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A 50Hz AC signal is applied in a circuit of inductance of (1/π)H and resistance 2100Ω
- If the minimum energy of photons needed to produce photoelectrons is 3 eV,
- A bar magnet of moment M and pole strength m is cut into parts of equal lengths.
- Two balls of mass m₁ and m₂ are separated from each other by powder charge
- The fossil bone has a ¹⁴C:¹²C ratio, which is [1/16] of that in a living animal
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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