Difference Between Ammeter and Voltmeter
by Yogi P - October 28, 2023
Difference Between Ammeter and Voltmeter | Ammeter vs Voltmeter
Ammeters and voltmeters are two essential electrical instruments used for measuring different electrical properties in a circuit. They have distinct functions, connections, and applications. Understanding the differences between ammeters and voltmeters is crucial for accurate electrical measurements. Let’s explore these distinctions.
What is Ammeter?
An ammeter is a device used to measure the electric current in a circuit. It is connected in series with the component or circuit under test, allowing it to measure the current passing through the circuit. Here are the key characteristics and applications of ammeters:
| Aspect | Ammeter |
|---|---|
| Measuring Property | Measures electric current (in amperes or amps). |
| Connection in Circuit | Connected in series with the circuit or component under test. |
| Purpose | Designed for accurate measurement of current flow in a circuit. |
| Display | Typically calibrated to display current values directly. |
| Range Selection | May have multiple current range settings for various applications. |
Ammeters are indispensable for electrical engineers, technicians, and anyone working with electrical circuits to measure current accurately.
What is Voltmeter?
A voltmeter is an instrument used to measure the voltage or electrical potential difference between two points in a circuit. It is connected in parallel with the component or circuit under test, allowing it to measure the voltage across the component. Here are the primary characteristics and applications of voltmeters:
| Aspect | Voltmeter |
|---|---|
| Measuring Property | Measures electrical voltage (in volts). |
| Connection in Circuit | Connected in parallel with the component or circuit under test. |
| Purpose | Designed for accurate measurement of voltage across a component or in a circuit. |
| Display | Typically calibrated to display voltage values directly. |
| Range Selection | May have multiple voltage range settings for various applications. |
Voltmeters are crucial for determining the voltage levels in electrical circuits, helping ensure safe and efficient operation.
Key Differences:
- Measuring Property:
- Ammeters measure electric current (in amperes or amps).
- Voltmeters measure electrical voltage (in volts).
- Connection in Circuit:
- Ammeters are connected in series with the circuit to measure current flow.
- Voltmeters are connected in parallel with the component to measure the voltage across it.
- Purpose:
- Ammeters are designed for accurate measurement of current flow in a circuit.
- Voltmeters are designed for accurate measurement of voltage across a component or in a circuit.
- Display:
- Ammeters are calibrated to display current values directly.
- Voltmeters are calibrated to display voltage values directly.
- Range Selection:
- Both ammeters and voltmeters may have multiple range settings to cover various applications and to ensure accurate measurements.
Conclusion
In summary, ammeters and voltmeters serve different measurement purposes within electrical circuits. Ammeters measure current flow, while voltmeters measure voltage levels. Understanding when and how to use these instruments is crucial for accurate electrical measurements and troubleshooting in various applications.
