Question

When the resistor voltage in a series RL circuit becomes less than the inductor voltage, the phase angle :

• A. decreases
• B. Is not affected
• C. cannot be determined
• D. increases

Answer 1

The correct option is D increases

As the inductor voltage decreases, the voltage across the resistor increases and therefore the current also increases. Ultimately, the inductor voltage is zero, all of the voltage source output is across the resistor, and the current is at its maximum value.When the resistor voltage in a series RL circuit becomes less than the inductor voltage, the phase angle increases.