Quick Answer: Ohms Law Apparatus is a panel unit for studying Ohm's law, with a 5 volt voltmeter, a 500 mA milliammeter, a wire-wound potentiometer and 4 mm sockets for the unknown resistance, in a spray-painted metal box.
Last updated: October 2026
Key Features
Two moving coil meters: voltmeter 5 volt and milliammeter 500 mA
One wire-wound potentiometer
Two 4 mm socket terminals for the DC supply and two for the unknown resistance
ON/OFF switch and printed circuit diagram on the front panel
Spray-painted metal box
Available in 1.5, 3 and 4.5 volt versions
Technical Specifications
Specification
Value
Voltmeter
5 volt, moving coil
Milliammeter
500 mA, moving coil
Potentiometer
Wire wound
Versions
1.5, 3 and 4.5 volt
Terminals
4 mm sockets for DC supply and unknown resistance
Enclosure
Spray-painted metal box
About This Product
Built as physics lab equipment for Ohm's law practicals, this Lab Meters unit lets students connect an unknown resistance to the panel sockets, adjust the potentiometer and record matching voltage and current readings.
Frequently Asked Questions
Q1. What meters are fitted? Two moving coil meters: a 5 volt voltmeter and a 500 mA milliammeter, mounted in the metal box.
Q2. How is the unknown resistance connected? Through two 4 mm socket terminals on the panel; the circuit diagram printed on the front panel shows the connections.
Export orders from Lab Equipments Ambala have gone to buyers in Australia, Guyana and São Tomé and Príncipe, among other markets.
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