Question

Calculate the total power of 8 fans, if each of them draws a current of 0.5 A at a p.d. of 200 V.

Answer 1

I = 0.5 A; p.d. = 200 V

∴ Power of one fan = I × V

= 0.5 × 200

= 100 W

∴ Power of 8 fans = 100 × 8 = 800 W