Question

Heat energy is being produced in a resistance in a circuit at the rate of 100 W. The current of 3 A is flowing in the circuit. What must be the value of the resistance?

Answer 1

100/9ohm. it is your required answer

Answer 2

Answer : Resistance of the circuit is $11.12\ \Omega$

Explanation :

Given that,

Heat energy is being produced in a resistance in a circuit at the rate of 100 W.  the current flowing in the circuit is 3 A.

We know that the power is given by :

$P=I^2R$

$R=\dfrac{P}{I^2}$

$R=\dfrac{100\ W}{(3\ A)^2}$

$R=11.12\ \Omega$

So, the resistance of the circuit is $11.12\ \Omega$.