Name 5 hazards that could increase the chances of severe or possibly fatal electrical shocks.

Draw a diagram of the wiring in the plug.

Name 5 safety features in a plug.

How does insulation increase the safety of a plug?

What is double insulation?
What are the benefits of double insulation?
Give an example of an object that has double insulation?

What does the earthing wire do?

What are fuses?

What are circuit breakers?

Name some items which use the useful conversion of electrical energy into heat.

What do fuses prevent?

How do you calculate power (in watts)?

Power formula triangle

What is power?

How do you calculate energy from power?

Calculate current from energy, voltage and time.

What is AC and DC current?

What are conductors?

What are insulators?

What is static electricity?

Unlike charges ................, like charges .................. .

Explain the process of charging by friction

Name 4 uses of static electricity.

Explain how inkjet printers work.

Explain how photocopiers work.

Explain how paint spraying works.

Explain how electrostatic precipitators work.

Name 3 problems with static electricity.

Explain the problems with static electricity and electric shocks.

Explain the problems with static electricity and fuelling tankers and aircraft.

Explain the problems with static electricity and handling microprocessors and computer 'chips.'

Definition of electric current.

How do you calculate current (in amps) from the charge.

Define voltage.

What is 1 volt?

Draw a parallel and series circuit.

What will happen is a lamp blows in
a) a series circuit?
b) a parallel circuit?

What is resistance?
How do you calculate it?

Resistance formula triangle

Give a use for a variable resistor.

What is a thermistor?

What is a light-dependent resistor (LDR)?

What is a diode and a LED?

Draw 3 current-voltage graphs.
a) resistors and wires
b) filament in a lamp
c) diodes