Question

A coil of inductance $5.0mH$ and negligible resistance is connected to an alternating voltage $V=10\sin \left(100t\right)$. The peak current in the circuit will be:

• A. $2amp$
• B. $1amp$
• C. $10amp$
• D. $20amp$

Answer 1

The correct option is D $20amp$

Inductive reactance $X_L=\omega L=100\times 5\times {10}^{-3}=0.5\Omega$

$V_{max}=PeakVoltage=10V$

Peak Current $I_p=\frac{PeakVoltage}{X_L}=\frac{10}{0.5}=20Amps$