There are two ways to measure electricity; one is by measuring current where ammeter is being used and another by measuring the voltage where voltmeter is being used. Both of these devices are used in electric circuits but the major difference between voltmeter and 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 from measuring 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 parallely connected with the electric circuit in order to measure the potential. Both the devices has same connection polarity which is the negative potential is joined with the negative polarity and 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 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 of range is not possible | Changing of range is possible |
| For ideal ammeter, the value of resistance is 0 | For ideal voltmeter, the value of resistance is approximately infinity |
| It is denoted by a symbol A | It is denoted by a symbol V |
These were some difference between ammeter and voltmeter. If you wish to find out more, download BYJU’S – The Learning App.
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