Physics – 1.7.2 Work | e-Consult

Answer:

1. Calculate the electrical power: P = I²R = (10 A)² × 10 Ω = 100 W.
2. The electrical power dissipated by the resistor is equal to the rate at which electrical energy is converted into heat. This is a direct consequence of the fundamental relationship between power, energy, and time: Energy = Power × Time. In a circuit, the power dissipated by a resistor is the electrical energy transferred to the resistor per unit time. The electrical energy is transferred from the source through the circuit and is dissipated as heat in the resistor.
3. The electrical power is directly proportional to the energy transferred in a circuit. A higher power means more energy is transferred in a given time. The relationship is clearly expressed in the formula Energy = Power × Time.