Edexcel A-Level Physics Potential Difference

Practise Edexcel A-Level Physics potential difference through energy-per-charge calculations, electron acceleration and volt units.

Exam points

use W = VQ to calculate energy transferred to electrons or circuit components
identify the volt as joules per coulomb in potential-difference unit questions
combine p.d. work with kinetic energy to calculate ion or electron speeds

[Maximum number: 1]

The cell in a solar-powered lamp stores 6.0 kJ of energy.
The lamp is switched on and the cell discharges fully. The cell has a constant e.m.f. of 1.5 V.
Which of the following is the charge flowing through the lamp during discharge?

250 C

900 C

4000 C

9000 C

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2.4.65 - Potential difference question 1