Models of circuits

Materials that allow the flow of electric charge.

• plastics

• insulators

• conductors

• wood

True or False: We use models to help us understand how current works in an electric circuit.

• True

• False

In this model, the moped riders represent the

• power pack

• bulbs

• flow of charge

• ammeter

In this model, the electrical energy carried around the circuit is represented as the

• pizza

• party goers

• party house

• roads going back and forth the house

In this model, the pump that pushes water round the system represents the

• battery

• electricity

• voltmeter

• bulb

In this model, the pipes are like ....... they carry ......... round the circuit

• wires; voltage

• bulbs; current

• bulbs; voltage

• wires; current

The radiator in the central heating system shown in the model is like the ......... in the circuit

• bulb

• cell

• wire

• charges

Materials that do not allow the flow of electric charge.

• conductors

• insulators

• metals

• fuse

The water has the most energy when it has just left the boiler, and least energy when it returns to the boiler. This statement models the .....

• charges which have the most energy when they have just left the cell, and the least energy when they return to the cell

• charges which have the least energy when they have just left the cell, and the least energy when they return to the cell

• charges being able to move around more easily when the wire is thick

• charges having difficulty to move around when the wire is thin

The drawing shows a model that can help you think about electricity. Which part of the model represents the energy transferred by the current?

• the coal mine

• the wagons

• the coal

• the factory