STANDARDPhysics-Alternating Current
STANDARD Physics Impedance in AC Circuits MCQ Question
Type: MCQ-numerical-Medium-Class 12
A circuit containing a 20 Ω resistor and 0.1 μF capacitor in series is connected to 230 V ac supply of angular frequency 100 rad s⁻¹. The impedance of the circuit is
A
10⁵ Ω
B
10⁴ Ω
C
10⁶ Ω
D
10¹⁰ Ω
Correct Answer
Option A
Detailed Explanation
The impedance Z is calculated using the formula Z = √(R² + (1/ω²C²)). Substituting R = 20 Ω, C = 0.1 μF = 10⁻⁷ F, and ω = 100 rad/s, we get Z ≈ 10⁵ Ω.
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