Question

the potential difference between the terminal of an electric heater please 60 v when it draws a current of 4 ampere from a source what current it will the heater draw if the the potential difference is increased to 120​

Answer 1

The question is partially typed. So assuming that the potential difference have increased to120 V below is the solution for it-

V= 60V

I = 4A

R= V/I =60/4= 15 ohms

Resistance of electric heater is 15 ohms

Now if the Potential difference is increased to 120 V ( if there is any other value of potential difference you can substitite in place of 120 and calculate in similar way as given below)

I= 120/ 15 = 8 A

Answer 2

Answer

V=60VI=4A

R= V/I = 60/4 =15Ω

When potential difference is increased to 120V

I= V/R = 120/15 =8A

The current through the heater becomes 8A