Question

200 j of heat is produced for 10 seconds in a 5 resistance .Find the potential difference across the resistor​

Answer 1

Given:

The amount of heat produced = 200 joules.

The time required to produce heat = 10 seconds.

The resistance = 5 ohms.

To find:

The potential difference across the resistor.

Solution:

The heat produced by the circuit is given by the formula,

H = i²Rt

Where,

H is the heat produced.

"i" is the current in the circuit.

R is the resistance.

t is the time taken.

Now, putting the values in the above equation, we get,

H = i²Rt

200 = i² x 5 x 10

i= 2 Ampere.

Now, according to ohms law,

V = iR

V = 2x5

V = 10v

Hence, the potential difference across the resistor is 10 volts.