Ammeter vs. Multimeter — What's the Difference?
Edited by Tayyaba Rehman — By Fiza Rafique — Updated on April 30, 2024
Ammeters measure electric current only, focusing on precision within circuits; multimeters are versatile, capable of measuring voltage, resistance, and current.
Difference Between Ammeter and Multimeter
Table of Contents
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Key Differences
An ammeter is designed specifically to measure electric current in a circuit, often in amperes, which is crucial for assessing circuit functionality. On the other hand, a multimeter, also known as a volt/ohm meter, can measure not just current but also voltage and resistance, making it a multifunctional tool for comprehensive electrical diagnostics.
Ammeters are typically connected in series with the circuit element whose current one wishes to measure, ensuring minimal impact on the circuit’s overall resistance. Whereas multimeters can be switched between series connection for current and parallel connection for voltage measurements, providing flexibility based on the diagnostic need.
The precision of ammeters is generally higher in reading current due to their dedicated design. On the other hand, multimeters, while versatile, might offer slightly less precision in current measurements compared to a dedicated ammeter because of the compromises made to accommodate multiple functions.
Ammeters are often used in industrial applications where high precision in current measurement is necessary to monitor large electrical systems efficiently. In contrast, multimeters are favored in both professional and amateur settings due to their versatility, as they allow for the troubleshooting of a wide range of electrical issues with a single device.
Safety features in ammeters are generally robust, designed to handle high currents safely. Multimeters, on the other hand, include additional safety features like overload protection across various measurement settings, which is crucial given their application in measuring different electrical parameters.
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Comparison Chart
Function
Measures only electric current
Measures current, voltage, resistance
Connection
Connected in series
Configurable; series or parallel
Precision
High precision for current
Less precision in current
Typical Use
Industrial settings
Professional and DIY use
Safety
Designed for high current handling
Overload protection in all modes
Compare with Definitions
Ammeter
Typically has a low internal resistance.
The ammeter’s low internal resistance ensures it does not affect the circuit performance.
Multimeter
Can function as an ammeter, voltmeter, and ohmmeter.
Switching the multimeter to ohmmeter mode, he checked the resistance of the heater.
Ammeter
A device for measuring the flow of electrical current in amperes.
The electrician used an ammeter to check the current flowing through the circuit.
Multimeter
A versatile tool used to measure volts, ohms, and amperes.
She used a multimeter to diagnose the problem in the electrical panel.
Ammeter
Requires careful handling due to its sensitivity and safety requirements.
He meticulously connected the ammeter, mindful of the high current involved.
Multimeter
Widely used in various electrical and electronic tasks.
Every electrician carries a multimeter for quick assessments.
Ammeter
Primarily used in testing and maintenance of electrical systems.
Ammeters are essential tools in the maintenance of industrial motors.
Multimeter
Needs correct setting adjustments to safely measure different parameters.
He adjusted the multimeter to the correct voltage setting before testing the outlet.
Ammeter
Instrument to quantify the current without significantly altering the circuit.
An ammeter must be carefully connected to avoid additional resistance in the circuit.
Multimeter
Often includes additional features like continuity testing and diode checking.
The multimeter beeped to indicate a successful continuity test.
Ammeter
An ammeter (abbreviation of Ampere meter) is a measuring instrument used to measure the current in a circuit. Electric currents are measured in Amperes (A), hence the name.
Multimeter
A multimeter is a measuring instrument that can measure multiple electrical properties. A typical multimeter can measure voltage, resistance, and current, in which case it is also known as a volt-ohm-milliammeter (VOM), as the unit is equipped with voltmeter, ammeter, and ohmmeter functionality.
Ammeter
An instrument for measuring electric currents in amperes.
Multimeter
An instrument that combines an ammeter, an ohmmeter, a voltmeter, and occasionally other measurement or testing devices into one unit.
Ammeter
A device that measures the magnitude of an electric current, especially one calibrated in amperes.
Multimeter
An electronic measuring instrument that combines multiple functions; a combined voltmeter, ammeter and ohmmeter.
Ammeter
A contraction of amperometer or ampèremeter.
Ammeter
A meter that measures the flow of electrical current in amperes
Common Curiosities
Is it safe to use a multimeter on live circuits?
Yes, but proper settings and precautions must be observed to ensure safety.
What should I use to measure both AC and DC currents?
A multimeter can measure both AC and DC currents effectively.
What is the main function of an ammeter?
It measures the flow of electrical current in a circuit.
How does the internal resistance of an ammeter affect a circuit?
It has low internal resistance to minimize its impact on the circuit's performance.
Can a multimeter measure temperature?
Yes, some advanced multimeters can measure temperature if equipped with a temperature probe.
Why is it important for an ammeter to be connected in series?
To measure the current accurately without altering the path of the circuit.
Can an ammeter measure low currents accurately?
Yes, ammeters are designed to measure both high and low currents with precision.
Can I use an ammeter to check battery health?
An ammeter can measure current draw, but a multimeter is better suited for comprehensive battery testing.
How do I choose between an ammeter and a multimeter for electrical tasks?
Use an ammeter for precise current measurement and a multimeter for general electrical diagnostics.
Do all multimeters measure capacitance?
Not all; some multimeters have the capability to measure capacitance, usually specified in the features.
Are multimeters easy to use for beginners?
Yes, with proper guidance and caution, multimeters can be user-friendly.
What safety features should I look for in an ammeter?
Look for features like high current handling and protective circuits against overload.
What extra functionalities does a multimeter offer over an ammeter?
It includes voltage, resistance, continuity testing, and sometimes temperature measurement.
How does the precision of an ammeter compare to a multimeter when measuring current?
Ammeters generally provide higher precision in current measurements compared to multimeters.
What types of batteries do multimeters typically use?
Most multimeters use standard AA or AAA batteries.
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Written by
Fiza RafiqueFiza Rafique is a skilled content writer at AskDifference.com, where she meticulously refines and enhances written pieces. Drawing from her vast editorial expertise, Fiza ensures clarity, accuracy, and precision in every article. Passionate about language, she continually seeks to elevate the quality of content for readers worldwide.
Edited by
Tayyaba RehmanTayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.
