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4.3.2a Series circuits

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Question 15

A circuit consists of an a.c. supply and two lamps connected in parallel. The electromotive force (e.m.f.) of the supply is 240 V240\text{ V}240 V. When connected to this supply, the resistance of one lamp is 600 Ω600\ \Omega600 Ω and the resistance of the other lamp is 400 Ω400\ \Omega400 Ω.

a.

Calculate the current in the 400 Ω400\ \Omega400 Ω lamp.

[2]
b.

Calculate the energy used by the 400 Ω400\ \Omega400 Ω lamp in 8.08.08.0 hours. Give your answer in kilowatt-hours (kWh\text{kWh}kWh).

[3]
c.

Calculate the combined resistance of the two lamps in this parallel circuit.

[3]
Markscheme

4.3.2a Series circuits Questions

  1. IGCSE
  2. /Physics
  3. /4.3.2a Series circuits

52 exam-style questions on CIE IGCSE Physics 4.3.2a Series circuits. Each one has a worked solution and a mark scheme showing where the marks go.

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