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The electric current in AC circuit is given by the relation i-3 sinωt+4 cosωt. The rms value of the current in the circuit in ampere is
Options
(a) 5/√2
(b) 5√2
(c) √2/5
(d) 1/√2
Correct Answer:
5/√2
Explanation:
The current through the AC circuit is given by
i = 3 sin ωt + 4 cos ωt
The maximum value of current is
I(max) = √(3² + 4v) = √25 = 5 unit
The rms value of current, I(rms) = I(max) / √2 = (5 / √2) unit
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A 200 W sodium street lamp emits yellow light of wavelength 0.6 µm
- A nucleus ᵐₙ X emits one α- particle and two β- particles. The resulting nucleus is
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- Three capacitors each of capacity 4 μF are to be connected in such a way that the effective
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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