Question

A circuit maintains a constant resistance. If the current in the circuit is doubled, what is the effect on the power dissipated by the circuit?

Answer 1

Hi! I would prefer to help you through it. But I don't know where you're stuck.

I'll just give you some relevant equivalent expressions:
\(P=VI=I^2R=\dfrac {V^2} R\)

Two of those will help you. Just look at the quantities mentioned in the problem.

Good luck!