AIPMT MAINS2011Physics-AC Circuits
AIPMT MAINS 2011 Physics Impedance MCQ Question
Type: MCQ-numerical-Medium-Class 12
A coil has resistances 30 Ω and inductive reactance 20 Ω at 50 Hz frequency. If an ac source, of 200 volt, 100 Hz is connected across the coil, the current in the coil will be
A
20/√13 Å
B
2.0 Å
C
4.0 Å
D
8.0 Å
Correct Answer
Option C
Detailed Explanation
Impedance Z = √(30² + (20)²) = 50 Ω. Current I = V/Z = 200/50 = 4 Å.
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