A bridge rectifier contains four diodes. The output of the rectifier is connected to a resistor R, as shown in Fig. 10.1. [Figure 10.1] The variation with time t of the input e.m.f. E to the rectifier is given by the expression E = 15 cos(210t) where t is measured in seconds and E in volts. The variation with time t of the potential difference V across resistor R is shown in Fig. 10.2. [Figure 10.2] Determine:

1. (a)the maximum potential difference VMAX across resistor R[1]
2. (b)the time interval, to two significant figures, between time t₁ and time t₂.[3]

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