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Electrometer

Product Code : SCL-EI-10689

The Electrometer is a physics laboratory instrument used for detecting and measuring electric charge, electrostatic potential, and small potential differences under supervised classroom conditions.

Quick Answer: An Electrometer detects and measures electric charge, electrostatic potential, and potential difference, helping students observe static electricity, charge transfer, and induction that are otherwise invisible. It is commonly used alongside a charge source such as the Conductor Ball or the Influence Machine, and is closely related to the Coulombmeter, which measures charge quantity rather than potential.

Key Features

Electrostatic charge detection: helps detect and compare electric charge during classroom demonstrations
Useful for potential measurement: supports experiments involving electrostatic potential and potential difference
Classroom demonstration value: makes abstract electrostatic concepts easier for students to observe
Compatible with physics accessories: can be used with suitable conductors, capacitors, charged rods, and electrostatic apparatus
Reusable lab instrument: suitable for repeated school and college physics practicals when handled correctly
Supports STEM learning: connects theory on charge, voltage, and induction with hands-on observation
Safety-focused use: intended for supervised low-energy educational experiments, not direct mains connection

Technical Specifications

Specification	Detail
Product Name	Electrometer
Product Category	Physics Lab Equipment / Electrostatics Instrument
Intended Users	Schools, colleges, physics teachers, laboratory technicians, STEM labs, and educational procurement teams
Main Demonstration	Electric charge detection, electrostatic potential, induction, and potential difference
Capacity	Not applicable; measuring instrument
Type	Analog, digital, or demonstration type

Check the terminals, leads, display, and body for visible damage before use.
Discharge the connected conductor or accessory before starting the experiment.
Connect the approved probe, conductor, or accessory to the electrometer input.
Introduce the charge source gradually and observe the indication, deflection, or reading.
Record the observation, then discharge the apparatus safely after the demonstration.

Safety note: Use the electrometer only under teacher supervision. Do not connect it directly to mains electricity, unapproved high-voltage sources, or circuits beyond the confirmed rating of the supplied model.

Care and Maintenance

Store the electrometer in a dry cabinet with other general lab equipment.
Keep terminals, probes, and connectors clean and free from dust or corrosion.
Avoid impact, moisture, and excessive static discharge beyond the rated input.
Use suitable safety protective wears during broader electrical laboratory demonstrations.

Electrometer vs. Coulombmeter: Which Measuring Instrument to Choose

The Electrometer and the Coulombmeter are both electrostatics measuring instruments, but they read different quantities: the electrometer indicates electrostatic potential and potential difference, while the coulombmeter measures the quantity of charge transferred. Schools building a complete electrostatics measurement station typically pair one or both instruments with a charge source such as the Conductor Ball, the Influence Machine, or a Van de Graaff Generator.

Frequently Asked Questions

What is an Electrometer used for?
An electrometer is used to detect or measure electric charge, electrostatic potential, and small potential differences in physics laboratory experiments.

Is an electrometer suitable for school physics labs?
Yes. It is suitable for supervised school and college physics laboratories when used with compatible electrostatic apparatus and safe procedures.

What concepts does an electrometer teach?
It supports lessons on static electricity, charge transfer, induction, potential difference, conductors, and capacitors.

Does the electrometer require a power supply?
The power requirement depends on the supplied model.

Can students operate the electrometer directly?
Students may use it only under teacher or laboratory instructor supervision. Connections and discharge steps should be controlled by trained personnel.