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10.1 Circuits, charge and current

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Question 46
H

A device is connected across a constant potential difference of 12 V. It transfers 720 J while carrying a current of 0.20 A.

The current is then increased to 0.30 A. A further 720 J is transferred.

How much less time does the second energy transfer take?

[1]
A

60 s60\ \mathrm{s}60 s

B

200 s200\ \mathrm{s}200 s

C

100 s100\ \mathrm{s}100 s

D

300 s300\ \mathrm{s}300 s

Markscheme

10.1 Circuits, charge and current Questions

  1. GCSE
  2. /Physics
  3. /10.1 Circuits, charge and current

94 exam-style questions on Edexcel GCSE Physics 10.1 Circuits, charge and current, covering 10.1.1 Structure of the atom, 10.1.2 Circuit diagrams and symbols, 10.1.3 Series and parallel circuits, 10.1.4 Potential difference and voltmeters, 10.1.5 Energy transferred, charge and potential difference, and 10.1.6 Current, ammeters and charge flow. Each one has a worked solution and a mark scheme showing where the marks go.

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