The unit of reduction factor of the tangent galvanometer is 

1. Ampere

2. Gauss

3. Radian

4. None of these

In order to pass 10% of the main current through a moving coil galvanometer of 99 ohms, the resistance of the required shunt is :

1. 9.9 Ω

2. 10 Ω

3. 11 Ω

4. 9 Ω

When a $12~\Omega$ resistor is connected in parallel with a moving coil galvanometer, its deflection reduces from $50$ divisions to $10$ divisions. What will be the resistance of the galvanometer?
1. $24~\Omega$
2. $36~\Omega$
3. $48~\Omega$
4. $60~\Omega$

A voltmeter has a resistance of G ohms and range V volts. The value of resistance used in series to convert it into a voltmeter of range nV volts is :

1. nG

2. $(n-1)G$

3. $\frac{G}{n}$ 

4. $\frac{G}{(n-1)}$

Which of the following statement is wrong:

1. Voltmeter should have high resistance

2. Ammeter should have low resistance

3. Ammeter is placed in parallel across the conductor in a circuit

4. Voltmeter is placed in parallel across the conductor in a circuit

A moving coil galvanometer has a resistance of 50 Ωand gives full scale deflection for 10 mA. How could it be converted into an ammeter with a full scale deflection for 1A :

1. 50/99 Ω in series

2. 50/99 Ω in parallel

3. 0.01 Ω in series

4. 0.01 Ω in parallel

The resistance of an ideal voltmeter is 

1. Zero

2. Very low

3. Very large

4. Infinite

The net resistance of a voltmeter should be large to ensure that :

A galvanometer having a resistance of $8~\Omega$ is shunted by a wire of resistance $2~\Omega$. If the total current is $1~\text{A}$, the part of it passing through the shunt will be:
1. $0.25~\text{A}$
2. $0.8~\text{A}$
3. $0.2~\text{A}$
4. $0.5~\text{A}$

A voltmeter of resistance 1000 Ω gives full-scale deflection when a current of 100 mA flow through it. The shunt resistance required across it to enable it to be used as an ammeter reading 1 A at full-scale deflection is :

1. 10000 Ω

2. 9000 Ω

3. 222 Ω

4. 111 Ω