Question

Determine the power loss across 5 ohm resistor

Answer 1

Explanation:

The power dissipation of a resistor is a calculation of the heat produced by the resistor. In general terms, this is the wasted energy of entropy (unless you happen to be building a really-efficient oven.) Where components in simple electrical or electronic circuits, we calculate dissipation in Watts: it is a measure of the work done in the circuit by that component, and it is a measure of how the component is likely to survive.

Power dissipation is directly related to power. To calculate power of an electrical component, you need to get a measure of the current through the component and the voltage (potential) placed across the component or created in the component by the current.