Question

If $\varphi$ is phase difference between current and voltage the wattless component of current is

• A. $I\cos \varphi$
• B. $I\sin \varphi$
• C. $I\tan \varphi$
• D. $I{\cos }^2\varphi$

Answer 1

Answer: (B)

$I_v\sin \varphi$ component of current gives no power consumption and hence, is called wattles current.