Electric Power Practice Test

A space heater is modeled as a single resistor of $R=24,\Omega$ connected across a $120,\text{V}$ outlet. The heater is the only load, so the voltage across the resistor equals the source voltage. Use $P=\frac{V^2}{R}$ to compute the electrical power converted to heat. Report the power in watts (W). Determine the power consumed by the appliance.

A household night-light is modeled as a single resistor of $R=240,\Omega$ connected directly across a $120,\text{V}$ outlet. The circuit is steady-state and the resistor is the only load. Use $P=\frac{V^2}{R}$ to find the electrical power converted to thermal energy and light. Report the result in watts (W). Determine the power consumed by the appliance.