Current and Potential Difference - CWA edit

• Science
• Lower Secondary (Key Stage 3)

Tuesday 18th March

Tuesday 18th March

Current is the rate of flow of...

1. Electrons
2. Atoms

Current is measured in...

1. meters per second
2. Amps
3. kilograms
4. Newtons

The symbol for Amps is...

1. a
2. A

Good conductors of current are...

1. Metals
2. Non-metals

Electrons that are free to move between atoms are called...

1. Delineated electrons
2. Delocalised electrons

Which wire is attached to a battery? How do you know?

Several cell joined together is called a...

1. Battery
2. Prison

A battery creates a charge called a...

1. Circuit
2. Potential difference

A potential difference pushes .............. around a circuit.

1. Protons
2. Electrons

Potential difference is measured in...

1. Ohms
2. Volts

What is current?

Quick questions - complete in your book

• Current is the flow of electrons around a circuit
• 
  
• The unit of current is amps (A)
• 
  
• Electrons move around a circuit
• 
  
• The unit of potential difference is Volts (V)

1) What is current? 

2) What is unit of current?

3) What moves around a circuit?

4) What is the unit of Potential Difference?

Cell

Battery

Ammeter

Voltmeter

Variable resistor

Open switch

Closed switch

Fixed resistor

Fuse

Filament bulb

In your book complete this table to create a full list of names and symbols

In your book complete this table to create a full list of names and symbols - Check your answers

Redraw this circuit to add an ammeter to measure the current

Redraw this circuit to add an voltmeter to measure the potential difference of bulb number 1

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