Skip to content

Course home

Sign up

Energy, power and resistance

EasyMediumHard
123456789101112131415
Question 12

An environmental monitoring sensor operates continuously at a constant potential difference of 5.0 V and draws a current of 24 mA.

What is the electrical energy transferred in the sensor over a period of 7.5 hours7.5\text{ hours}7.5 hours?

A

0.90 J0.90\text{ J}0.90 J

B

3.2×103 J3.2 \times 10^3\text{ J}3.2×103 J

C

9.0×102 J9.0 \times 10^2\text{ J}9.0×102 J

D

3.2×106 J3.2 \times 10^6\text{ J}3.2×106 J

Markscheme

Energy, power and resistance Questions

  1. A Level
  2. /Physics
  3. /Energy, power and resistance

26 exam-style questions on OCR A A Level Physics Energy, power and resistance, covering Circuit symbols, E.m.f. and p.d, Resistance, Resistivity, and Power. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank