KCL and KVL

Q. Two incadesecent light bulbs of 40W and 60 W rating are connected in series across the mains Then

1. the bulb together consume 100W
2. the bulb together consume 50 W
3. the 60 W bulb glows brighter
4. the 40 W bulb glows brighter

Q. In the circuit shown in the figure, the value of the current i will be given by

1. 0.31 A
2. 1.25 A
3. 1.75 A
4. 2.5 A

Q.

For the combination of resistors shown in the following figure, find the equivalent resistance between $M$ and $N$

Q. A 3 V dc supply with an internal resistance of 2$\Omega$ supplies a passive non- linear resistance characterized by the relation $V_{NL}=I_{NL}^2.$ The power dissipated in the non linear resistance is

1. 1.0 W
2. 1.5 W
3. 2.5 W
4. 3.0 W

Q. In figure, the value of the source voltage is

1. 12V
2. 24V
3. 30V
4. 44 V

Q. A segment of a circuit is shown in figure $V_R=5V,V_c=4sin2t.$ The voltage $V_L$ is given by

1. 3 - 8 cos 2t
2. 32 sin 2t
3. 16 sin 2t
4. 16 cos 2t

Q. The equivalent capacitance of the input loop of the circuit shown is

1. $2\mu F$
2. $100\mu F$
3. $200\mu F$
4. $4\mu F$

Q. In the circuit shown in figure, X is an element which always absorbs power. During a particular operation, it sets up a current to 1 amp in the direction shown and absorbs a power $P_x$, It is possible that X can absorb the same power $P_x$ for another current i. Then the value of this current is

1. (3 - $\sqrt{14}$) A
2. (3 + $\sqrt{14}$) A
3. 5 A
4. None of these

Q. If the $12\Omega$ resistor draws a current of 1 A as shown in the figure, the value of resistance R is

1. 4 $\Omega$
2. 6 $\Omega$
3. 8 $\Omega$
   
4. 18 $\Omega$
   

Q. Find $V_{AB}$?

1. 15 V
2. - 30 V
3. + 30 V
4. - 15 V

Q. Find the value of $I_o$ (in A) from the below given circuit.

1. 30

Q. Find the value of $V_x$ (in V) from the network shown below.

1. 9

Q. In the figure, the value of resistor R is $(25+\frac{1}{2})\Omega$, where I is the current in amperes. The current I is___.

1. 10

Q. Find $I_x$ ?

1. -8A
2. +8A
3. -4A
4. +4A

Q. An AC voltage source V = 10 sin(t) volts is applied to the following network. Assume that $R_1$ = $3k\Omega$, $R_2$ = $6k\Omega$, and $R_3$ = $9k\Omega$, and that the diode is ideal.


RMS current $I_{rms}\left(inmA\right)$ through the diode is ___
____.

1. 1
2. 2
3. 6
4. 7

Q. The current $i_4$ in the circuit of figure is equal to

1. 12 A
2. -12 A
3. 4 A
4. None of these