B C1108 Pages 4

11 Solve for the current I in the figure 5 using Norton’s Theorem. (10)

Fig. 5

PART C
Answer any two full questions, each carries 10 marks.

12 2) A series RC circuit with R=10Q and C=4uF has an initial charge Qo=800uC on (10)
the capacitor. At t=0, the switch is closed to apply a constant ‏عل‎ voltage source of
100۷. Sketch the transformed circuit. Find the resulting current transient if the
charge on the capacitor has the same polarity as deposited by the source.

13 a) In the network shown in figure 6, the switch is opened at t= 0. Find out the (10)
current through the 1Q resistor after opening the switch.

0 0.51
+ V(t)

[> 1
1೪ 5

Fig. 6
14 a) Inthe RL circuit shown in figure 7, the switch is in position 1 long enough to (10)
establish steady state conditions and at t=0, it is switched to position 2. Find the
resulting current.

1

50५ ‏ف‎

0.01H

Fig, 7

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