Question

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

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

Answer 1

Answer: (B)

$ {{I}_{v}}\sin \phi $ component of current gives no power consumption and hence, is called wattles current.