The current I in the circuit shown below is:

1. $-3 \mathrm{A}$

2. 3 A

3. 13 A

4. 20 A

As the switch is closed in the circuit then current passed through it is 

1  7.5 A

2  3 A

3  4.5 A

4  Zero

In the network shown, the current / is

1  3 A

2  4 A

3  2 A

4  1 A

A part of electric circuit is shown in the figure. In the given circuit V_B - V_C is equal to 12 V. ${\mathrm{I}}_1$ is equal to

1  1 A

2  2 A

3  3 A

4  4 A

In the network shown, the potential at junction D is

1  $\frac{180}{11}V$

2  $\frac{11}{180}V$

3  10 V

4  5 V 

The value of electric current i₁ in the network below is 

1  5 A

2  9 A

3  8 A

4  7 A

Current through the branch AO is- 

1.  2 A

2.  4 A

3.  1 A

4.  Zero

Which of the following graph represents the variation of resistivity ($\rho$) with temperature (\(T\)) for copper?

1.		2.
3.		4.

A charged particle having drift velocity of \(7.5\times10^{-4}~\text{ms}^{-1}\) in an electric field of \(3\times10^{-10}~\text{Vm}^{-1},\) has mobility of: 
1. \(2.5\times 10^{6}~\text{m}^2\text{V}^{-1}\text{s}^{-1}\)
2. \(2.5\times 10^{-6}~\text{m}^2\text{V}^{-1}\text{s}^{-1}\)
3. \(2.25\times 10^{-15}~\text{m}^2\text{V}^{-1}\text{s}^{-1}\)
4. \(2.25\times 10^{15}~\text{m}^2\text{V}^{-1}\text{s}^{-1}\)

A resistance wire connected in the left gap of a meter bridge balances a \(10~\Omega\) $$resistance in the right gap at a point which divides the bridge wire in the ratio \(3:2\). lf the length of the resistance wire is \(1.5~\text{m}\), then the length of \(1~\Omega\) of the resistance wire will be:
1. \(1.0\times 10^{-1}~\text{m}\) 
2. \(1.5\times 10^{-1}~\text{m}\)
3. \(1.5\times 10^{-2}~\text{m}\)
4. \(1.0\times 10^{-2}~\text{m}\)