A voltmeter is used to find p.d. in any electrical circuit which of the statement given below is true :a)A voltmeter is a high resistance instrument and is connected in series circuitb)A voltmeter is a low resistance instrument and is connected in series circuitc)A voltmeter is a high resistance instrument and is connected in parallel circuitd)None of the aboveCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Explanation:

A voltmeter is an instrument used to measure the potential difference (p.d.) or voltage between two points in an electrical circuit. It is important to note that a voltmeter should always be connected in parallel with the component or circuit being measured.

Resistance of a Voltmeter:

The resistance of a voltmeter should be very high so that it does not draw a significant amount of current from the circuit being measured. If the resistance of the voltmeter is low, it will draw a large amount of current from the circuit, which can affect the accuracy of the measurement and also damage the circuit being measured.

Connecting the Voltmeter:

A voltmeter should always be connected in parallel with the component or circuit being measured. This is because, in parallel connection, the potential difference across the voltmeter is the same as that across the component or circuit being measured. If the voltmeter is connected in series, it will change the overall resistance of the circuit, which can affect the accuracy of the measurement.

High Resistance of Voltmeter:

As stated earlier, a voltmeter should have a high resistance so that it does not draw a significant amount of current from the circuit being measured. This is because the resistance of the voltmeter can affect the potential difference being measured. If the resistance of the voltmeter is low, it will draw a large amount of current from the circuit, which can affect the potential difference being measured.

Conclusion:

In conclusion, a voltmeter is a high resistance instrument and should be connected in parallel with the component or circuit being measured.

Answer

If voltmeter is connected in series it resist the flow of electric current through it due to its high resistance so it is connected in parralel

Answer

It is connected in parallel as p.d. doesn't divide in a parallel combination.

In an ideal voltmeter r=infinity

Therefore current will be very less or approx 0

Answer

Option C is  correct as voltmeter is a device which is used to measure the p.d. and is always connected in parallel as it have a high resistance and if it is connected in series it would resist the flow of current.

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Why voltmeter has high resistance and ammeter has low resistances?

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