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1.

A wire has resistance 24 $\Omega$. It is bent in the form of a circle. The effective resistance between the two point on the diameter of the circle is 
1. 6$\Omega$
2. 4$\Omega$
3. 3$\Omega$
4. 12$\Omega$

2.

The drift velocity of the electrons in a current-carrying  metallic conductor is of the order of:
1. $10^{4}~\text{m/s}$
2. $10^{8}~\text{m/s}$
3. $10^{0}~\text{m/s}$
4. $10^{-4}~\text{m/s}$

3.

In the circuit shown in the figure, the effective resistance between $A$ and $B$ is:
                         
1. $2~\Omega$
2. $4~\Omega$
3. $6~\Omega$
4. $8~\Omega$

4.

For the circuit shown in the figure, the value of R must be
                       
1.  3$\mathrm{\Omega }$
2.  4$\mathrm{\Omega }$
3.  5$\mathrm{\Omega }$
4.  6$\mathrm{\Omega }$

5.

$\mathrm{In} \mathrm{the} \mathrm{circuit} \mathrm{shown} \mathrm{in} \mathrm{figure} \mathrm{if} \mathrm{power} \mathrm{dissipated} \mathrm{in} 9\mathrm{\Omega } \mathrm{resistor} \mathrm{is} 144\mathrm{W}, \mathrm{then} \mathrm{potential} \mathrm{difference} \mathrm{across} 3.6\mathrm{\Omega } \mathrm{resistor} \mathrm{will} \mathrm{be}$

1.  36V
2.  18V
3.  9V
4.  Zero

6. A battery has emf $4$ V and internal resistance $r$. When this battery is connected to an external resistance of $2$ ohm, a current of $1$ ampere flows in the circuit. How much current will flow if the terminals of the battery are connected directly?

1.	$1$ A	2.	$2$ A
3.	$4$ A	4.	Infinite

7.

Three copper wires have their lengths in the ratio 5:3:1 and their masses are in the ratio 1:3:5. Their electrical resistance will be in the ratio of :
1. 5:3:1
2. 1:3:5
3. 125:15:1
4. 1:15:125

8.

The current $I$ as shown in the circuit will be:

1.	$10~\text{A}$	2.	$\dfrac{20}{3}~\text{A}$
3.	$\dfrac{2}{3}~\text{A}$	4.	$\dfrac{5}{3}~\text{A}$

9.

The current through the $5~\Omega$ resistor is:

1.	$3.2~\text A$	2.	$2.8~\text A$
3.	$0.8~\text A$	4.	$0.2~\text A$

10. The current in a wire varies with time according to the relation $i = (3+2t)~\text{A}$. The amount of charge passing a cross section of the wire in the time interval $t=0$ to $t = 4.0~\text{s}$  would be: (where $t$ is time in seconds)

1.	$28$ C	2.	$30.5$ C
3.	$8$ C	4.	$82$ C

11.

In the figure, a carbon resistor has bands of different colours on its body as shown. The value of the resistance is:
                                         
1.  2.2 k$\Omega$
2.  3.3 k$\Omega$
3.  5.6 k$\Omega$
4.  9.1 k$\Omega$

12.

The resistivity of a wire :

1.	Increases with the length of the wire
2.	Decreases with the area of cross-section
3.	Decreases with the length and increases with the cross-section of the wire
4.	None of the above statement is correct

13.

The resistance of a wire is 10 Ω. Its length is increased by 10% by stretching. The new resistance will now be:
1. 12.1 Ω
2. 1.2 Ω
3. 13 Ω
4. 11 Ω

14.

The potential difference between points A and B of the adjoining figure is

1. $\frac{2}{3}V$
2. $\frac{8}{9}V$
3. $\frac{4}{3}V$
4. 2 V

15.

The reading of the ammeter as per figure shown is

1. $\frac{1}{8}A$
2. $\frac{3}{4}A$
3. $\frac{1}{2}A$
4. 2 A

16.

In the figure shown, the total resistance between A and B is

1. 12 Ω
2. 4 Ω
3. 6 Ω
4. 8 Ω

17.

A battery of emf $10$ V is connected to resistance as shown in the figure below. The potential difference $V_{A} - V_{B}$
between the points $A$ and $B$ is:
 
1. $-2$ V
2. $2$ V
3. $5$ V
4. $\frac{20}{11}~\text{V}$

18.

What will be the equivalent resistance between the two points A and D 

1. 10 Ω
2. 20 Ω
3. 30 Ω
4. 40 Ω

19.

The total current supplied to the circuit by the battery is:
      
1. $1~\text{A}$
2. $2~\text{A}$
3. $4~\text{A}$
4. $6~\text{A}$

20.

In circuit shown below, the resistances are given in ohms and the battery is assumed ideal with emf equal to $3$ volt. The voltage across the resistance $R_4$ is:
         
1. $0.4$ V
2. $0.6$ V
3. $1.2$ V
4. $1.5$ V