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Question 18

Four different electrical heating elements are tested in a laboratory. Which heating element dissipates the greatest electrical power?

A

Element A, which has a resistance of 6.0 Ω6.0\ \Omega6.0 Ω and operates at a potential difference of 12 V12\text{ V}12 V

B

Element B, which has a resistance of 4.0 Ω4.0\ \Omega4.0 Ω and carries a current of 2.5 A2.5\text{ A}2.5 A

C

Element C, which is connected to a 16 V16\text{ V}16 V supply and transfers a charge of 180 C180\text{ C}180 C in 2.0 minutes2.0\text{ minutes}2.0 minutes

D

Element D, which operates with a current of 1.3 A1.3\text{ A}1.3 A and a potential difference of 18 V18\text{ V}18 V

Markscheme

Simple circuits Questions

  1. GCSE
  2. /Physics
  3. /Simple circuits

42 exam-style questions on OCR GCSE Physics Simple circuits. Each one has a worked solution and a mark scheme showing where the marks go.

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