UCEA P5 Electricity in the home

Which statement about AC and DC electricity is incorrect?

• a) Alternating current pushes electrons backwards and forwards many times a second.
• b) Direct current is produced from chemical reactions pushing the electrons.
• c) Direct current pushes electrons only in the forwards direction.
• d) Alternating current is produced by burning metal ores to make magnetic fields.

Which of the following labels correctly identifies the Fuse on the diagram of a UK electrical plug?

• C
• D
• E
• F

Which of the following labels correctly identifies the Live Wire on the diagram of a UK electrical plug?

• A
• B
• C
• D

Which of the following labels correctly identifies the Earth Wire on the diagram of a UK electrical plug?

• A
• B
• C
• D

Which of the following labels correctly identifies the Neutral Wire on the diagram of a UK electrical plug?

• A
• B
• C
• D

The charge of an electron is

• positive
• negative
• electrons have no charge
• zero

The SI unit of charge is the

• Coulomb
• Joule
• Watt
• Newton

What is the voltage of mains electricity in the UK National Grid?

• 120 V
• 220 V
• 230 V
• None of these

What is the frequency of alternating current in the UK National Grid?

• 60 Hz
• 50 Hz
• 230 V
• 120 V

What is an example of a DIRECT CURRENT source?

• battery
• solar cell
• both of these
• neither of these