Question

12)
200 V is, 800 W, if 400 v find power

Answer 1

Answer:

Explanation:

POWER = V²/R

V = VOLTAGE

R = RESISTANCE

SINCE R IS NOT GIVEN , IT IS CONSIDERED TO BE A CONSTANT

CASE 1 :

800 W = 200²/R...........(1)

CASE 2 :

X W = 400²/R..............(2)

(1)/(2)

800/X = 200*200/400*400

X = 3200 W.

HOPE THIS HELPS.