Initially there was no energy stored in the 5 H inductor in the circuit in Figure when it...

Initially there was no energy stored in the 5 H inductor in the circuit in Figure when it was placed across the terminals of the voltmeter. At t = 0 the inductor was switched instantaneously to position b where it remained for 1.6 s before returning instantaneously to position a. The d’Arsonval voltmeter has a full-scale reading of 20 V and a sensitivity of 1000 Ω/V. What will the reading of the voltmeter be at the instant the switch returns to position a if the inertia of the d'Arsonval movement is negligible?