Electronic Systems Thinking and Circuits, End Term

January 2026 term, 10 May 2026, Set 2

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Question 1

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The current in a coil increases linearly from 0.4 A to 1 A in 2 s. During this interval, the voltage across the coil is 60 mV. The inductance of the coil is 200 mH.

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The current in a coil increases linearly from 0.4 A to 1 A in 2 s. During this interval, the voltage across the coil is 60 mV. The inductance of the coil is 200 mH. Two incandescent bulbs rated at 40 W (at 230 V) and 60 W (at 230 V) are connected in series across a 230 V supply. The total power consumed is 100 W. For the circuit shown in the figure, the equivalent capacitance between the terminals A and B is 2.64 μF. Figure from the original question paper