Page 139 - Physics Coursebook 2015 (A level)

Learning outcomes
You should be able to:
■■ show an understanding of the nature of electric current
■■ define charge and the coulomb
■■ solve problems using the equation Q = It
■■ derive I = nAve
■■ solve problems involving the mean drift velocity of charge carriers
■■ define potential difference, e.m.f. and the volt
■■ use energy considerations to distinguish between p.d.
and e.m.f.
■■ define resistance and the ohm
■■ solve problems using V = IR
■■ solve problems concerning energy and power in
electric circuits
Chapter 9:
Electric current, potential difference and resistance
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