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4.2.5 Electrical energy and electrical power

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Question 1

The average current during a lightning strike between a cloud and the ground is 2.5 × 104 A. The lightning releases 8.0 × 108 J of energy and lasts for 4.0 × 10-4 s. What is the average electromotive force (e.m.f.) between the cloud and the ground?

A

12.8 V12.8\text{ V}12.8 V

B

3.2×104 V3.2 \times 10^4\text{ V}3.2×104 V

C

8.0×107 V8.0 \times 10^7\text{ V}8.0×107 V

D

5.0×1016 V5.0 \times 10^{16}\text{ V}5.0×1016 V

Markscheme

4.2.5 Electrical energy and electrical power Questions

  1. IGCSE
  2. /Physics
  3. /4.2.5 Electrical energy and electrical power

69 exam-style questions on CIE IGCSE Physics 4.2.5 Electrical energy and electrical power. Each one has a worked solution and a mark scheme showing where the marks go.

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