Question

G
[2]
खण्ड-अ / (Section-A)
विशुद्ध प्रतिरोधक युक्त AC परिपथ में वोल्टता और धारा के बीच कलांतर कितना
होता हैं?
What is the phase difference between voltage and current in an AC
circuit with pure resistor?​

Answer 1

The phase difference between voltage and current in a PURELY RESISTIVE AC CIRCUIT is Zero degree (0°).

But why ?

Let voltage be :

$V = V_{0} \sin( \omega t)$

Now, let resistance be R, so current will be:

$i = \dfrac{V}{R}$

$\implies \: i = \dfrac{V_{0} \sin( \omega t)}{R}$

$\implies \: i = \dfrac{V_{0}}{R} \sin( \omega t)$

$\implies \: i = i_{0} \sin( \omega t)$

So, both current and voltage are in same phase, so phase difference is 0°.