- Consider the following circuit :

Switch is closed at t = 0

Find i(0^{+})At t = 0, capacitor will be short.

So i(0) = V / R. - In question no. 1, which of the following is true ?
At t = 0
^{+}, capacitor will be short.

So, i(0) = i_{c}= V/R. - The impulse response of the system described by the differential equation

will beUnder Construction. - The current at a given point in certain circuit is given as function of time as

i(t) = d – 3+t, t = 99 sec & t = 102 sec is

. - What would be the power given by source V
_{2}?Among two voltage source, only 10V source will deliver power to 5 V voltage source. Power given by V_{2}= – V^{2}/ R = - 5 W. - Two combination of similar inductors are show below. Which one has more inductance between A & B
Here in circuit B, mutual inductance is additive. So in circuit 2 has more inductance.
- Consider the following circuit. What is the value of i ?
Voltage source will offer zero resistance path to current. So net current in 1 Ω resistance depends only voltage source. So current i = 5 × i = 5 A.
- In above question, power given in the SV source is
Source current = 5 – 1 = 4 Amp.

Power given by the 5 V source = 5 × 4 = 20 W. - Total power consumed in the circuit below is 10 W. Find x.
Total power consumed = x
^{2}× 2 + 2^{2}/2

⇒ 10 W = 2 ×x^{2}+ 2

Therefore, x = 2 A. - If V
_{out}= 1V for 1 KHz input then what would be V_{out}for 10 KHz for same input ?

So a frequency of 1 MHz, the gain is 1 or 0 dB. - A battery of E volts is supplying a steady current to a series circuit of total resistance R ohm & inductance L Henry. A part R
_{1}of the total resistance is suddenly short circuited.

Find the expression for current flowing through the battery subsequent to the operationLet, after t sec, the current is i.

At t = 0, i = E / R,

. - In above question, determine the current if E = 100 V, R = 20 ohm, R
_{1}= 10 Ohm & L = 2 H at 0.5 sec after short circuit. - A first order linear system is initially relaxed. For a unit step signal u(t), the response (1 – e
^{ - 3t }) for t > 0. If the signal 3u(t) + δ (T) is applied to same initially relaxed system, the response will beUsing the principal of superposition so output due to 3u(t) + δ(t) is

= 3 – 3e^{ – 3t}+ 3e^{ –3t }

= 3 = 3u(t) . - A 10 V battery with an internal resistance of 1 Ω is connected across a non-linear load whose V. I characteristic are 7i = V
^{2}+ 2V. The current delivered by the battery isVoltage across the non linear load = 10 – 1× I

So, 7I = V^{2}+ 2V

I = 5A. - Find the total power absorbed by the resistor in the given circuit.
Equivalent circuit can be drawn,

P = I^{2}R. - In the circuit shown below if I = 2A then find V ?
The circuit can be redrawn as

⇒ V = ½ × 2 + ½ × 2 =2 V. - What is I
_{1}in the given circuit ?Voltage across 2 ohm resistance carrying current I_{1}is

= (6 × 1) / 4 + (3 × 1) / 3 = 3V. - What is V
_{a}in the below circuitApplying superposition theorem,

. - If L & C both are doubled than damping in above circuit will be

Here if L & C both are doubled that means

. - A capacitor is charged by a constant 10mA current sources which is turned on for 1 second. Assuming the capacitor is initially charge free; determine the charge delivered to & the power supplied by the source if the capacitor has a value of 1mF
: V = q / C $amp; q = i.t

Power delivered P =Vi = qi / C.

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