Question

1.
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? If value of resistance is
changed to 15 ohm
, what will be the value of current flowing in the circuit?​

Answer 1

answer

Solution

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Given that,

Power, P=100W

Current, I=3A

Power,

P=VI

P=I

2

R

R=

I

2

P

So,

R=

9

100

R=11.1Ω