The network shown in the figure is a part of a complete circuit. If at a certain instant the current i is 5 A and is decreasing at the rate of 103A/s then VA−VB is
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a
5 V
b
10 V
c
15 V
d
20 V
answer is C.
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Detailed Solution
By using Kirchhoff's voltage lawVA−i R+E−Ldidt=VB ⇒VB−VA=15 volt.