An ammeter is a device that measures the current flowing in a circuit.

An ammeter measures the current in units called amps (A) which is short for amperes.

An ammeter is always placed in a series circuit so the electric current has to pass through it.

Measuring electric current 

Science

In the Magnets and electromagnets unit, they will build on this knowledge to learn about how electric current flows through electromagnets, factors that affect the strength of electromagnets and uses of electromagnets that include a simple electric motor.

In Changing circuits unit (Y6), pupils learnt to construct simple circuits, and about complete circuits, circuit diagrams and how the number and voltage of cells in a battery affect components in a circuit. 

Series circuits

Physical activity and equipment requiring safe use

it decreases as it passes through components

it increases as it passes through components

it stays the same as it passes through components

it decreases as it passes through components then goes back to the original

What happens to the current in a series circuit?

it is placed before the battery it will increase, if after, it will decrease

What will happen to the current when an ammeter is placed in a series circuit?

the ammeters have no effect on the current

the lamp reduces the current and the ammeters increase the current

both the lamp and the ammeters reduce the current

Which statement is true about this circuit?

ammeter 1 will be positive and ammeter 2 will be negative

What statement is correct about the readings on the two ammeters?

lamp 1 will be brightest followed by lamp 2 and lamp 3 will be dimmest

lamp 3 will be brightest followed by lamp 2 and lamp 1 will be dimmest

lamps 1 and 3 will be the brightest and lamp 2 will be dim

What is the name of the tiny charged particles that flow round a circuit?

What is the name of the component that can be closed (to allow current to flow) or open (to stop current flowing)?

What is the word used to describe a flow of charge?

electrons only leave a battery - they don't enter it

Where would you find electrons that can flow to cause a current? Choose all that apply.

a component that pushes out and pulls in electrons

Match the electrical circuit terms to the correct meanings.

Content guidance

Risk assessment required - equipment

Adult supervision required

This lesson will soon be taken down.

Measuring electric current

Lesson outcome

Content guidance