Question

In a purely resistive circuit:

• A. current lags behind the voltage by ${90}^o$
• B. current leads the voltage by ${90}^o$
• C. current can lag or lead the voltage by ${90}^o$
• D. current is in phase with the voltage

Answer 1

The correct option is D current is in phase with the voltage

$Answer:-$ D

Load is purely resistive (no reactance), the current is in phase with the voltage, and calculations look similar to that in an equivalent DC circuit. If we were to plot the voltage, current, and power waveforms for this circuit, it would look like figure shown.