An electric room heater draws a current of 2.4 A from the 120 V supply line. What current will this room heater draw when connected to 240 V supply line?

Question

Philoid · Accepted Answer

I=2.4A

potential difference = 120V:

R= V/I

R= 120/2.4 =50 ohms

Since resistance remains constant therefore if potential difference = 240V

then, I= V/R = 240/50 = 4.8A