A-LevelPhysicsElectricity9702/12 · May/June 2015 · Q331 Mark
Which statement is not valid?
ACurrent is the speed of the charged particles that carry it.
BElectromotive force (e.m.f.) is the energy converted to electrical energy from other forms per unit charge.
CThe potential difference (p.d.) between two points is the work done per unit charge when moving charge from one point to the other.
DThe resistance between two points is the p.d. between the two points per unit current.
✓ Correct answer
A: Current is the speed of the charged particles that carry it.
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