# NPTEL Basic Electrical Circuits Week 2 Assignment Answers 2024

## NPTEL Basic Electrical Circuits Week 2 Assignment Answers 2024

1.

• 2.929 mA
• 10 mA
• 2 mA
• 10.929 mA
`Answer :- Click Here`

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
`Answer :- Click Here`

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 Iin = 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
`Answer :- Click Here`

7.

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) = Ror, also from C to D resistance varying as a function R(r) = Ror2 , where r is the distance from A. also given RBC = 2 Ω. Now find the resistance between A and D.(Given Ro = 2).

• 1.8 Ω
• 276 Ω
• 274 Ω
• 2.4 Ω
`Answer :- `

8.

`Answer :- `

9.

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.

Now let’s say 3 elements with coefficients P1,P2,P3 are connected in series, what is the effective coefficient P of the whole material?

• P1+P2+P3
• P2P3 + P1P3 + P1P2
• P1P2P3
• 1/(P1+P2+P3)
`Answer :- `

10. From the diagram given below, find the value of Vout.

• -45 V
• -18 V
• -27 V
• -10 V
`Answer :- `

11. Find the resistance of R1, R2 for the system below to work as ideal VCVS and VCCS.

• R1= 0, R2= 0
• R1=0, R2= ∞
• R1= ∞, R2= 0
• R1= ∞, R2= ∞
`Answer :- `

12. Find the equivalent resistance between points A and B, if each side of the cube has a resistance R.

• 3R/4
• 7R/5
• 2R/5
• 7R/12
`Answer :- Click Here`