Question

An electric iron draws a current 4 A when connected to a 220 V mains. Its resistance must be *​

Answer 1

Answer:

v=i/r

220=4/r

r= 220/4

r=55

Answer 2

Answer:

it's resistance must be 55 ohm

Explanation:

Given, I = 4 ampere

V = 220 volt

Then, V = IR (by Ohm's law)

220 volt = 4 amphere × R

therefore, R = 220 volt / 4 ampere

R = 55 ohm