Electricity and Power Quiz

What is resistance and why does it occur? Describe electrical resistance, the connection between potential difference, current and resistance, and the effects of adding resistors in series and parallel.

Investigate the relationship between current, potential difference (p.d.), and resistance for a resistor and filament lamp.

Test series and parallel circuits using resistors and filament lamps.

What is meant by power? Define power and state its units. Describe how power is related to energy transferred in joules, and how to calculate power when you know the current and potential difference.

What design features keep us safe when using electricity? Describe the difference between the live and neutral wire, explain how earth wires and fuses make circuits safer, and state the potential differences between the earth, neutral and live wires.

Complete the energy transfer diagrams for the light bulb.

Complete the energy transfer diagrams for a ball bearing fired from a catapult.

Complete the energy transfer diagrams for a remote controlled car.

How does adding additional bulbs to a series circuit affect the brightness of the bulbs? Why does this happen?

Describe the cause of electrical resistance in wire.