The voltage on the conductor is 20 V, its resistance is 50 Ohm. Determine the power consumed by the conductor.

Given:

U = 20 Volts – voltage at the ends of a certain conductor;

R = 50 Ohm is the resistance of this conductor.

It is required to determine W (Watt) – the power consumed by the conductor.

Let’s find the magnitude of the current passing through the conductor:

I = U / R = 20/50 = 2/5 = 0.4 Ampere.

Then, in order to determine the power, you must use the following formula:

W = I * U = 0.4 * 20 = 4 * 2 = 8 watts.

Answer: the power consumed by the conductor is 8 watts.