Question

*4. 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? [2 Marks​

Answer 1

Answer:

Explanation:

Given: P=100 W

I=3 A

R=?

Sol.-     P=VI

100=3*V

V=100/3 V

According to Ohm’s law,  

V=IR

100/3=3*R

R=100/3/3=100/9

R=11.1 Ohm (approx.)