What Is The Working Principle Of Voltmeter?

A voltmeter works on the principle of Ohm’s law. It is used to measure the potential difference between two points of a circuit.

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Related Questions

1. What Is The Formula Of Ammeter?
2. State And Explain Joules Law Of Heating.
3. What are ohmic and non-ohmic devices? Give examples.
4. What is the necessary condition for a conductor to obey Ohm's Law?
5. The resistance R= V/I, where V=100 ± 5.0V and I = 10 ± 0.2A. What is the total error in R?
6. Draw a circuit diagram to verify ohm’s law.
7. Is resistance constant in Ohm's law?
8. What are the applications of ohm's law used in daily life?
9. Why is the series arrangement not used for domestic circuits?
10. Why is the curve representing Ohm's law linear?
11. Obtain the equation J = σE of Ohm's law on the basis of drift velocity
12. Find the current through a resistance of 2 ohms if the voltage across the resistance is 6 V.
13. A battery of 9 V is connected in series with resistors of 0.2 Ohms, 0.3 Ohms, 0.4 Ohms, 0.5Ohms, and 12 Ohms respectively. How much current would flow through the 12-ohm resistors?
14. A small bulb has a resistance of 2 ohms when it is cold. It draws 0.4-ampere current from a source of4V and then starts glowing. Calculate the resistance when it is glowing
15. Why Do We Use Ohm's Law?

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