DFCCIL EE Circuit Theory Quiz 5

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Question 1

In the circuit, if V_c(0) = 25 V, the expression for V_c(t) for t > 0 is

• A
• B
• C
• DV_c(t) = 25e^-t/0.5

Question 2

At t=0, the switch S is thrown from b to a of the circuit as shown below. What are the values of v(0⁺) and i(0⁺)?

• A50 V, 90 mA
• B50 V, 100 mA
• C50 V, 110 mA
• D50 V, 120 mA

Question 3

A series R-L-C circuit is switched ON to a step voltage V at What are the initial and final values of the current in the circuit, respectively?

• AV/R, V/R
• BZero, Infinity
• CZero, Zero
• DZero, V/R

Question 4

In any network the current will be seen to be consisting of a forced current and a natural current. A forced current is

• Aa steady-state current with external source but a natural current is a transient current in a closed circuit with no external source.
• Ba transient current with external source but a natural current is a steady-state current in a closed circuit with no external source.
• Ca steady-state current in a closed circuit without external source, while a natural current is a transient current with an external source.
• Da transient current in a closed circuit without external source, while a natural current is a steady-state current with an external source.

Question 5

The nature of current response for for the network shown is

• A
• B
• C
• D

Question 6

In the circuit shown below, the constant current source of value I is switched on at t= 0. What are the values of currents i₁ and i₂ when the attain its steady state condition, with zero initial conditions?

• AI₁=I; I₂=0
• BI₁=I/2; I₂=0
• CI₁=0; I₂=I
• D 0; 0

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