Question

the potential difference between the two terminals of an electric heater is 60 volt when it is drawn a current of 4A from the source. what the current will the heater drawn if the potential difference is increased in 120 volt?​

Answer 1

Given :

Potential Difference of heater = 60v

current I=4A

Resistance =R?

By Ohm's law :

V=IR

R=V/R

=60/4=15 ohms

Now if potential is increased to 120 V

I=?

V=IXR

I=V/R

=120/15

=8 A

Hence current drawn by heater is 8A

Answer 2

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Refer the attachment...