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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.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The radius of a planet is twice the radius of earth. Both have almost
- The electric resistance of a certain wire of iron is R. If its length and radius
- An electric dipole of dipole moment p is aligned parallel to a uniform electric field E
- If force(F),length(L) and time(T) be considered fundamental units, then the units of mass
- Two sound waves of wavelengths 5m and 6m formed 30 beats in 3 seconds
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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