Question

if we double both the current and voltage in a circuit keeping its resistance constant then power becomes................explain

Answer 1

power becomes four times as much as it was before the increase, here are three equations for power.
P = EI Power equals the product of voltage and current, if you double each P is 4 times as much.

P=(E^2)/R if R is doubled, then R^2 is 4 times, so is the power.

P=I^2R if I is doubled the I^2 is quadrupled and so is power.

Answer 2

@radar thanks