Voltmeter

Q. A Galvanometer can be converted into a voltmeter by connecting ___ .

1. A low resistance shunt wire is connected in parallel to galvanometer coil.
2. A high resistance shunt wire is connected in parallel to galvanometer coil.
3. A low resistance shunt wire is connected in series to galvanometer coil.
4. A high resistance shunt wire is connected in series to galvanometer coil.

Q.

What is the voltmeter used for?

Q.

Write the function and symbol of a voltmeter.

Q.

Why does a voltmeter have infinite resistance ?

Q. For the circuit shown in figure, the equivalent resistance between $\text{A}$ and $\text{C}$ will be

1. $\frac{12r}{11}$
2. $\frac{15r}{11}$​​
3. $\frac{14r}{11}$​​​​
4. $\frac{13r}{11}$

Q.

Write the symbol of a Voltmeter in a circuit.

Q. An ideal voltmeter is connected in the figure. The current in circuit is

1. $2\text{A}$
2. $2.5\text{A}$
3. $\infty$
4. $\text{zero}$

Q. In given circuit when voltmeter is connected across $2\Omega$ gives reading 5V. When same voltmeter is connected across $3\Omega$ the reading will be

1. 5V
2. 7.5V
3. 2.5V
4. 4V

Q. What is the current through the voltmeter if it has a coil resistance of 100k$\Omega$, series resistance of 1k$\Omega$ and 202V is measured by it?

1. 2A
2. 20mA
3. 2mA
4. 2.02A

Q. The magnitude of the resistance of the resistor in series with the coil of the voltmeter should be

1. Very High
2. Low
3. Medium
4. Negligible