NPTEL Basic Electrical Circuits Week 2 Assignment Answers 2024

2.929 mA
10 mA
2 mA
10.929 mA

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2. In the circuit shown below find the voltage across the capacitor Vcap after t = 3ns. Given that, initial voltage across the capacitor is -5V (according to the polarity shown below) and the value of k = 3

– 2 V
2 V
8 V
-8 V

Answer :-

3. Let’s say you are in your college lab and you are given a voltage controlled voltage source and its internal circuit is shown below. Here you can vary k from -1 to 0.8. Also, you have 3 resistors R = {1Ω, 10Ω, 100Ω} with you. Now choose any one resistor and k value between the given range so that the equivalent resistance between port 1 and 2 becomes maximum. [Note that you can connect one resistor and wire between port 3, 4, 5, 6] The values of R and k respectively are-

100Ω, 0.8
10Ω, 0
100Ω, -1
1Ω, -1

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4. Calculate the effective resistance of the below infinite ladder question across terminals A and B

3R Ω
2.3R Ω
7R Ω
12R Ω

Answer :-

5. Determine the current I in the below circuit
Consider R1 = 8 kΩ ,R2 = 12kΩ, R3 = 5 kΩ.

-4.2 mA
-0.5 mA
4.5 mA
-3.2 mA

Answer :-

6. Find the potential between the two terminals A and B (in volts) when I_in = 150sin(5t) mA and C = 2 mF. All the capacitors are uncharged initially

75 cos (5t) V
– 30 cos (5t) V
5 [ 1 – cos (5t) ] V
5 cos (5t) V

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In the diagram given above length of AB = 4m, BC = 1m, CD = 3m. Also from A to B resistance varying as a function R(r) = R_or, also from C to D resistance varying as a function R(r) = R_or² , where r is the distance from A. also given R_BC = 2 Ω. Now find the resistance between A and D.(Given R_o = 2).

1.8 Ω
276 Ω
274 Ω
2.4 Ω

Answer :-

Answer :-

Let’s say there is an element as shown above where current and voltage follows the relation 𝑉 = 𝑙𝑜𝑔₁(P1) . where P1 is some coefficient for the given material same as the R,C and L.