A-LevelPhysicsPhysical quantities and units9702/12 · May/June 2019 · Q21 Mark

What is the number of SI base units required to express electric field strength and power?

Aelectric field strength: 3, power: 3

Belectric field strength: 3, power: 2

Celectric field strength: 4, power: 2

Delectric field strength: 4, power: 3

✓ Correct answer

D: electric field strength: 4, power: 3

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Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2019 Paper 1 Variant 2, question 2.

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