distinguish between root-mean-square (r.m.s.) and peak values and recall and use Ir.m.s. = I0 / √2 and Vr.m.s. = V0 / √2 for a sinusoidal alternating current

use, for a current-carrying conductor, the expression I = Anvq, where n is the number density of charge carriers

understand and use the terms displacement, amplitude, period, frequency, angular frequency and phase difference in the context of oscillations, and express the period in terms of both frequency and angular frequency