Equations for Electrical Power Calculation

The video tutorial explains the concept of electrical power and its relation to energy transfer, focusing on three key equations: power from voltage and current (P=V*I), power from current and resistance (P=I^2R), and the relationship between energy and power (E=P*T). It provides practical examples to illustrate how to calculate power and energy transfer in electrical components like lamps and resistors.

What is the formula for calculating electrical power using potential difference and current?

How can you calculate the power of a device if you know the current and resistance?

Explain the relationship between energy, power, and time.

In the first example, what were the values used to calculate the power of the lamp?

What is the electrical power of a 20 ohm resistor with a current of 0.5 amperes?