Do now!

Have a look through your test and fill in the

front of your “Tests folder”. Can you then write a target for the next topic under the target sheet for the inheritance module

Stand up!

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Electricity

Today’s lesson

• Understand that current is the rate of flow of charge

• Looking at current in different circuits

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cell

energy

electron

lamp

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cell

energy

electron

lamp

Can you copy this please?

Electrons

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Hi, I’m Jack the electron.

Coulomb of charge (electrons)

Think of it as a “bag of electrons” (containing 6000000000000000000 electrons!)

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Current

The number of Coulombs flowing past a point in the circuit every second.

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A

I’m counting how many

coulombs of electrons go

past me every second

1 Amp = 1 coulomb per second

Current

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Let’s build some circuits and investigate current.

Stand up!

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In a series circuit

Current is the same at any point in the circuit

2.5 A

2.5 A 2.5 A

2.5 A

In a series circuit

Current is the same at any point in the circuit

2.5 A

2.5 A 2.5 A

2.5 A

☺Can you copy this please?

In a parallel circuit

The current splits (total current stays the same)

2.5 A

2.5 A

1.25 A

1.25 A

In a parallel circuit

The current splits (total current stays the same)

2.5 A

2.5 A

1.25 A

1.25 A

☺Can you copy this please?

Milliamps!

1 A = 1000 mA

1 mA = ?

Milliamps!

1 A = 1000 mA

1 mA = 0.001 A