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An electric lamp is connected to 220 V, 50 Hz supply. Then the peak voltge is
Options
(a) 210 V
(b) 211 V
(c) 311 V
(d) 320 V
Correct Answer:
311 V
Explanation:
Measurement of A.C voltage gives the rms values.
V(rms) = 220 V
Peak value Vm = V(rms) √2 = √2 (220 V) = 311 V.
Related Questions: - Two cells, having the same e.m.f. are connected in series through an external resistance
- A monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically.
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- A wire of resistance 4 ohm is stretched to twice its original length.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two cells, having the same e.m.f. are connected in series through an external resistance
- A monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically.
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- A wire of resistance 4 ohm is stretched to twice its original length.
- A body is moving in a vertical circle. The string must remain taut at the highest point
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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