AIPMT PRELIMS2011Physics-Alternating Current
AIPMT PRELIMS 2011 Physics RMS Current MCQ Question
Type: MCQ-numerical-Medium-Class 12
In an AC circuit an alternating voltage e = 200√2 sin 100t volts is connected to capacitor of capacity 1 μF. The r.m.s. value of the current in the circuit is
A
20 mA
B
10 mA
C
100 mA
D
200 mA
Correct Answer
Option A
Detailed Explanation
The r.m.s. current is calculated using I_RMS = ε₀ / (1/ωC) = 200 × 100 × 10⁻⁶ A, which equals 20 mA.
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