A current of 3 A is produced in a circuit that has?

available power of 45 Watts, and a voltage of 20 Volts.
available power of 70 Watts, and a voltage of 35 Volts.
has available power of 21 Watts, and a voltage of 7 Volts.
both b and c.

Question

A current of 3 A is produced in a circuit that has?

available power of 45 Watts, and a voltage of 20 Volts.
available power of 70 Watts, and a voltage of 35 Volts.
has available power of 21 Watts, and a voltage of 7 Volts.
both b and c.

joemc · Answer

Power (watts) = voltage (volts) x current (amperes).
So, for each choice see if the available power listed is equal to the current given multiplied by the given voltage.