Question

what is the phase difference between voltage and current in AC circuit with pure resistor?​

Answer 1

Answer:

In a pure resistor, the phase difference between AC Emf and AC current is zero.

In a pure inductor, the AC Emf is ahead of AC current by a phase of exactly 90

∘

Explanation:

Answer 2

The Phase difference between voltage and current in AC circuit with pure resistor is 0 as there is no phase difference between them.

Explanation:

A pure resistive circuit  is a circuit containing only resistance . It does not exhibit any reaction to AC unlike inductive and capacitive loads. That is why in this case the voltage is simply linearly proportional to current i.e. V=IR given by Ohm's law. Hence we say that Current is in phase with the voltage.

Explanation using Phasor diagram

Phasor Diagram is a graphical method to represent the magnitude and directional relationship between two or more alternating quantities.

To explain the above situation using phasor diagram for a resistive circuit, we have the following phasor diagram. Here we have shown that the phase difference between current and voltage value is 0.

Note: In some cases,the resistive loads can show some small capacitive and inductive reaction to AC but is generally so small that it is considered as negligible .