SSC JE Electrical Engineering 2014 Set 2 Paper

Question : 148 of 200

Marks: +1, -0

If a

10 – µF

capacitor is connected to a voltage source with v(t) = 50 sin 2000 tV, then the current through the capacitor is __________ A.

Solution:

∵

i(t) = C {dv(t) }/{dt}

∴

i(t) =10 ×10^{-6} \ { d(50sin2000t) }/{dt}

= 10 ×10^{–6} ×50 ×2000 \cos 2000t

= \Cos 2000 t A.

∴ Option (c) is correct.

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