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 R₄ is:

1. 0.4 V

2. 0.6 V

3. 1.2 V

4. 1.5 V

A battery of e.m.f. E and internal resistance r is connected to a variable resistor R as shown below. Which one of the following is true​​​​​​?

The current in the arm CD of the circuit will be:
           
1. $i_1+i_2$

2. $i_2+i_3$

3. $i_1+i_3$

4. $i_1-i_2+i_3$

Consider the circuit shown in the figure below. The current I₃ is equal to:

1. 5 A

2. 3 A

3. –3 A

4. –5/6 A

In the Wheatstone's bridge (shown in the figure below) X = Y and A > B. The direction of the current between a and b will be:

In the circuit given below, the e.m.f. of the cell is 2 volt and the internal resistance is negligible. The resistance of the voltmeter is 80 ohm. The reading of the voltmeter will be:                                 
1. 0.80 volt

2. 1.60 volt

3. 1.33 volt

4. 2.00 volt

In the circuit shown below, E₁ = 4.0 V, R₁= 2 Ω, E₂ = 6.0 V, R₂ = 4 Ω and R₃ = 2 Ω. The current I₁ is:

1. 1.6 A

2. 1.8 A

3. 1.25 A

4. 1.0 A

The potential difference across 8 ohms resistance is 48 volts as shown in the figure below. The value of potential difference across X and Y points will be:

1. 160 volt

2. 128 volt

3. 80 volt

4. 62 volt

What is the equivalent resistance between terminals A and B of the network?

1. $\frac{57}{7}\Omega$

2. 8 Ω

3. 6 Ω

4. $\frac{57}{5}\Omega$

The effective resistance between points P and Q of the electrical circuit shown in the figure is:
            

1. $2Rr/(R+r)$

2. $8R$ $(R+r)/(3R+r)$

3. $2r+4R$

4. $5R/2$ $+$ $2r$