(a)[1]
Determine the maximum potential difference $V_{\text{MAX}}$ across the resistor $R$.
(b)[3]
Determine the time interval, to two significant figures, from $t_1$ to $t_2$.
Physics 9702 · AS & A Level · Rectification and smoothing
Rectification and smoothing — practice question
A bridge rectifier includes four diodes. Its output is linked to a resistor $R$, as illustrated in Fig. 10.1. The input e.m.f. $E$ supplied to the rectifier varies with time $t$ according to $E = 15\cos(210t)$, where $t$ is measured in seconds and $E$ in volts. Fig. 10.2 shows how the potential difference $V$ across resistor $R$ changes with time $t$.