Chapter 3, Problem 1RQ

How many degrees are the current and voltage out of phase with each other in a pure resistive circuit?

To determine

The degrees by which the current and voltage are out of phase with each other in a pure resistive circuit.

Explanation of Solution

In a pure resistive circuit, the current and the voltage are in phase with each other. This means that the in a pure resistive circuit, the phase angle between them is equal to $0°$.

The induced voltage is able to resist the flow of current just as resistance, these current limiting property of the inductor is known as reactance. The reactance is caused by inductance, so it is known as inductive reactance. The inductive reactance is denoted by ${\text{X}}_{\text{L}}$. In a pure resistive circuit, the current flowing through the resistor rises and falls at the same rate as the voltage and reverses the flow direction with a change in polarity of voltage.

Thus, the degrees by which the current and voltage are out of phase with each other in a pure resistive circuit is $\underset{\_}{0°}$.