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

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

In the circuit shown, the value of each of the resistances is r.  The equivalent resistance of the circuit between terminals A and B will be:
        
1. (4/3)r

2. 3r/2

3. r/3

4. 8r/7

Drift velocity v_d varies with the intensity of electric field as per the relation: 

1. $v_d\propto E$

2. $v_d\propto \frac{1}{E}$

3. v_d = constant

4. $v_d\propto E^2$ 

If a metallic block has no potential difference applied across it, then the mean velocity of free electron is:
(T = absolute temperature of the block)

A wire of resistance R is divided into 10 equal parts. These parts are connected in parallel, the equivalent resistance of such connection will be:

1. 0.01R

2. 0.1R

3. 10R

4. 100R

In the figure, the value of resistors to be connected between C and D so that the resistance of the entire circuit between A and B does not change with the number of elementary sets used is:

1. R

2. $R(\sqrt{3}-1)$

3. 3 R

4. $R(\sqrt{3}+1)$

A battery of e.m.f. 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. $\frac{20}{11}V$

What is the equivalent resistance of the circuit​​​​​​?

1. 6 Ω

2. 7 Ω

3. 8 Ω

4. 9 Ω

If each resistance in the figure is 9 Ω, then the reading of the ammeter is:

1. 5 A

2. 8 A

3. 2 A

4. 9 A

Equivalent resistance across terminals A and B will be:

1. 1 Ω

2. 2 Ω

3. 3 Ω

4. 4 Ω