Fig. 9.1 depicts a circuit containing an alternating current (a.c.) supply, a resistor and a diode. The frequency of the power supply is 50 Hz.
(a)[2]
Calculate the time period (the duration of one complete cycle) of the a.c. supply.
(b(i))[2]
On Fig. 9.2, sketch a graph to show how the p.d. across the resistor changes with time for two cycles.
(b(ii))[1]
Mark the p.d. axis with the peak value of p.d.
(b(iii))[2]
Put two time values on the time axis.
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