A torch bulb rated \(4.5\) W, \(1.5\) V is connected as shown in the figure below. The emf of the cell needed to make the bulb glow at full intensity is:

1.	\(4.5\) V	2.	\(1.5\) V
3.	\(2.67\) V	4.	\(13.5\) V

The metre bridge shown is in a balanced position with \(\frac{P}{Q} = \frac{l_1}{l_2}\). If we now interchange the position of the galvanometer and the cell, will the bridge work? If yes, what will be the balanced condition?

    
1. Yes, \(\frac{P}{Q}=\frac{l_1-l_2}{l_1+l_2}\)
2. No, no null point
3. Yes, \(\frac{P}{Q}= \frac{l_2}{l_1}\)
4. Yes, \(\frac{P}{Q}= \frac{l_1}{l_2}\)

In the figure below, what is the potential difference between the point A and B and between B and C, respectively, in steady state?

1. $V_{AB}=V_{BC}=100V$

2. $V_{AB}=75V,V_{BC}=25V$

3. $V_{AB}=25V,V_{BC}=75V$

4. $V_{AB}=V_{BC}=50V$

When the key K is pressed at time t = 0, which of the following statement about the current I in the resistor AB of the given circuit is true?
          

The potentiometer wire AB is 600 cm long. At what distance from A should the jockey J touch the wire to get zero deflection in the galvanometer?

1. 320 cm

2. 120 cm

3. 20 cm

4. 450 cm

In the circuit shown in the figure below, the current supplied by the battery is:

                                     
1. \(2\) A
2. \(1\) A
3. \(0.5\) A
4. \(0.4\) A

The equivalent resistance between points \(A\) and \(B\) in the circuit shown in the figure is:

In the circuit shown in the figure below, if the potential difference between \(B\) and \(D\) is zero, then value of the unknown resistance \(X\) is:

The figure below shows a network of currents. The current \(i\) will be:

           

1. \(3~\text{A}\)
2. \(13~\text{A}\)
3. \(23~\text{A}\)
4. \(-3~\text{A}\)