Electrical Energy Transfers: Calculating Power and Energy

The video tutorial explains three equations for calculating electrical power and demonstrates how to use them to determine energy transfer in electrical devices. It covers the equations P = E/t, P = I*V, and P = I^2*R, explaining the meaning of each symbol and the importance of using correct units. The tutorial provides three examples: a toaster, a kettle, and a hair dryer, showing step-by-step calculations of energy transfer using the given equations.

What is the significance of converting time from minutes to seconds in the calculations?

Describe the process of calculating the energy transferred by a kettle drawing 13 amps with a resistance of 18 ohms in 3 minutes.

How can you combine equations to find the energy transferred by a hair dryer drawing 10 amps at 220 volts in 90 seconds?