Electricity lesson 4 - energy and power in a circuit

OUTCOME

By the end of the lesson you will be able to apply relationships for energy and power to electrical circuits.

Reading quiz. p.86-90

Engage

The relationships for energy and power can be derived from our understanding of current and voltage

A battery works by creating a potential difference using a chemical reaction

LEARNING TASKS

Explain

Play with the following and answer the questions below

Battery resistor energy

Explore and elaborate

Power use of an electric motor

Q? Is the amount of energy needed to run your phone bigger or smaller than the amount of energy you ate at breakfast?

Evaluate

Ex 3.6, p. 101

DPQs 2.3.12-3

Reading for next lesson p.91-100