Skip to content

Course home

Powering Earth

Powering Earth

EasyMediumHard
123456789101112131415
Question 14

Which of the following correctly describes the standard domestic electricity supply in the USA?

A

120 V120\text{ V}120 V alternating current (a.c.) at 60 Hz60\text{ Hz}60 Hz

B

120 V120\text{ V}120 V alternating current (a.c.) at 50 Hz50\text{ Hz}50 Hz

C

120 V120\text{ V}120 V direct current (d.c.) at 60 Hz60\text{ Hz}60 Hz

D

120 V120\text{ V}120 V direct current (d.c.) at 50 Hz50\text{ Hz}50 Hz

Markscheme

Powering Earth Questions

  1. GCSE
  2. /Physics
  3. /Powering Earth

39 exam-style questions on OCR GCSE Physics Powering Earth. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank