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A resistance of 20 ohm is connected to a source of an alternating potential V=220 sin (100 πt). The time taken by the current to change from its peak value to r.m.s value is
Options
(a) 2.5 x 10⁻³ sec
(b) 0.25 sec
(c) 25 x 10⁻³ sec
(d) 2.5 sec
Correct Answer:
2.5 x 10⁻³ sec
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If an A.C. mains supply is given to be 220 V, what would be the average e.m.f.
- A piece of iron is heated in a flame. It first comes dull red then becomes reddish
- If a steel wire of length l and magnetic moment M is bent into a semicircular arc,
- A ball rolls without slipping. The raidus of gyration of the ball about an axis
- If the wavelength of light in vacuum be, the wavelength in a medium of refractive index
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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