(a)[2]
Complete Fig. 8.1 so that, for the bridge rectifier, point $A$ is at a positive potential with respect to point $B$.
(b(i))[3]
On Fig. 8.2, draw a line to represent how the potential difference $V$ across the load resistor varies with time $t$. The line should run from $t = 0.5T$ to $t = 2.0T$.
(b)
Fig. 8.2 shows how the potential difference (p.d.) $V$ across the load resistor varies with time $t$.
(b(ii))[3]
Use your line in (b)(i) to work out, in terms of $T$, the time constant of the smoothing circuit.
(b(iii))[2]
The resistance of the load resistor is now increased, while the capacitance of the capacitor remains unchanged. State and explain the effect of this change on the smoothed output p.d.