voltmeter is used measure electric potential difference and ammeter is used to measure electric current

Introduction
An ammeter and a voltmeter are essential instruments in electrical engineering, used to measure current and voltage, respectively. Understanding their differences is crucial for proper usage in circuits.
Functionality
- Ammeter: Measures the flow of electric current in a circuit, expressed in amperes (A).
- Voltmeter: Measures the electrical potential difference (voltage) between two points in a circuit, expressed in volts (V).
Connection Method
- Ammeter: Connected in series with the circuit components to measure the current flowing through them.
- Voltmeter: Connected in parallel across the circuit elements to measure the voltage drop across them.
Internal Resistance
- Ammeter: Designed with very low internal resistance to minimize impact on the circuit's current flow.
- Voltmeter: Designed with high internal resistance to ensure that it does not draw significant current, thus not affecting the voltage it measures.
Applications
- Ammeter: Used in applications requiring current measurement, such as monitoring battery discharge or circuit evaluation.
- Voltmeter: Utilized for measuring voltage in power supplies, troubleshooting circuits, and ensuring proper voltage levels in electrical systems.
Conclusion
Understanding the differences between an ammeter and a voltmeter is fundamental for anyone working with electrical circuits. Proper use of these instruments ensures accurate measurements and effective circuit analysis.