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.

Similar Class 10 Doubts

An electrical bulb of resistent 20 ohm and a resistence wire of 4ohm are connected in series with a 6V Bettary. draw the diagram and calculate. (

A 10 V battery is connected to a series combination of two resistances of 4000 and 6000 . A non-ideal voltmeter of resistance 10,000 connected across 4000 reads 3.226 V. What would be the value if the same voltmeter connected across 6000 ?

26. The current flowing through a resistor connected in an electrical circuit and the potential difference developed across its ends are shown in the given ammeter and voltmeter. Find the least count of the voltmeter and ammeter .What is the voltage and the current across the given resistor?

A low electrical resistance of copper makes it a good electric conductor. So, it is used to make electric wires.

Why voltmeter has high resistance and ammeter has low resistances?

Top Courses for Class 10View all

Science Class 10

Social Studies (SST) Class 10

Mathematics (Maths) Class 10

English Grammar Advanced

English Grammar Basic

Top Courses for Class 10

Top Courses for Class 10

Suggested Free Tests

Related Content

About Class 10

Class 10 Study Material

Class 10 All Subjects

NCERT Textbook Solutions

Other Classes

Important Links

Company