Q. An electric heater rated 220 V and 550 W is connected to A.C. mains. The current drawn by it is
A) 0.8 $A$
B) 2.5 $A$
C) 0.4 $A$
D) 1.25 $A$
Explanation
(b) $P = VI$
$I = \frac{550}{220} = 2.5\ A$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.