Question

an electric heater having resistance equal to 5 ohm is connected to electric source . If it produces 180 J of heat in one second ,find the potential difference across the electric heaterl​

Answer 1

V = 30 volts

Step-by-step explanation:

Given that,

The resistance of an electric heater, R = 5 ohm

Heat produced is 180 J in one second

We need to find the potential difference of the electric heater. The heat produced is given by :

`E=I^2Rt\\\\or\\\\E=(V^2)/(R)t\\\\V=\sqrt{(ER)/(t)} \\\\V=\sqrt{(180* 5)/(1)} \\\\V=30\ V`

So, the potential difference across the heater is 30 volts.