Question

An electric utility company supplies a customer's house from the main power lines (120V) with two copper wires, each of which is 50.0m long and has a resistance of 0.108 ω per 300m. (c) the rate at which internal energy is produced in the copper wires.

Answer 1

The electrical power or rate at which internal energy is produced in the copper wires is 435.6 W.

What is the internal rate at which internal energy is produced in the copper wires?

The internal energy produced in the copper wires is energy due to the resistance in the wire and is converted to heat energy.

The rate at which it is produced is electrical power.

Therefore, the rate at which  internal energy produced in the copper wires is given as follows:

Power = I²R

R = l * 0.108 Ω/300m

Power = 110² * (2 * 50 * 0.108 Ω/300m)

Power = 435.6 W

In conclusion, electrical power is lost as heat in the wires.

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