ElectricityAQA GCSE Physics (8463)

Domestic Uses and Safety

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

Practice progress

6 MCQs

0 of 6 attempted

Correct

Incorrect

Remaining

1
UK mains voltage is:
Answer & explanation
Correct: option B
UK mains: 230 V at 50 Hz.
2
An oscilloscope showing a flat horizontal line indicates:
Answer & explanation
Correct: option B
Constant voltage = DC. Note: a flat line at zero would be 'no signal'.
3
UK mains frequency is:
Answer & explanation
Correct: option A
UK and European mains: 50 Hz. US is 60 Hz.
4
If f = 25 Hz, period T = ?
Answer & explanation
Correct: option A
T = 1/f = 1/25 = 0.04 s.
5
Which is a typical DC source?
Answer & explanation
Correct: option C
Batteries are DC. Mains is AC.
6
Why does the UK use AC for mains electricity?
Answer & explanation
Correct: option B
Transformers only work with AC; high-voltage transmission reduces I²R losses.

ElectricityAQA GCSE Physics (8463)

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

6 MCQs

0 of 6 attempted

Correct

Incorrect

Remaining

1
UK mains voltage is:
Answer & explanation
Correct: option B
UK mains: 230 V at 50 Hz.
2
An oscilloscope showing a flat horizontal line indicates:
Answer & explanation
Correct: option B
Constant voltage = DC. Note: a flat line at zero would be 'no signal'.
3
UK mains frequency is:
Answer & explanation
Correct: option A
UK and European mains: 50 Hz. US is 60 Hz.
4
If f = 25 Hz, period T = ?
Answer & explanation
Correct: option A
T = 1/f = 1/25 = 0.04 s.
5
Which is a typical DC source?
Answer & explanation
Correct: option C
Batteries are DC. Mains is AC.
6
Why does the UK use AC for mains electricity?
Answer & explanation
Correct: option B
Transformers only work with AC; high-voltage transmission reduces I²R losses.