There are two ways to measure electricity; one is by measuring the current where the ammeter is being used and another by measuring the voltage where the voltmeter is being used. Both of these devices are used in electric circuits but the major difference between a voltmeter and an ammeter is ammeter comes in handy for measuring the flow of current whereas the voltmeter comes in handy for measuring the voltage or emf across two points in an electric circuit.
Difference Between Ammeter and Voltmeter
The ammeter is used for measuring a small amount of current and the result is displayed in milliamperes when it is kept in series with the circuit to be measured so that the entire current in the circuit is passing through it.
Voltmeter is parallelly connected with the electric circuit in order to measure the potential. Both these devices have the same connection polarity which is the negative terminal is joined with the negative polarity and the positive terminal is joined with the positive polarity of the supply.
| Difference Between Ammeter and Voltmeter | |
|---|---|
| Ammeter | Voltmeter |
| It is used to measure current. | It is used to measure the voltage across two points. |
| Resistance is low. | Resistance is high. |
| It is connected in series with the circuit and its accuracy is more. | It is connected in parallel with the circuit and its accuracy is less. |
| Changing the range is not possible. | Changing the range is possible. |
| For ideal ammeter, the value of resistance is 0. | For an ideal voltmeter, the value of resistance is approximately infinity. |
| It is denoted by a symbol A. | It is denoted by a symbol V. |
There were some differences between the ammeter and voltmeter. If you wish to find out more, download BYJU’S – The Learning App.
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