Quick Answer: Resistance in Series and Parallel is a panel apparatus for checking the equivalent resistance rules, with a built-in 9V DC supply, a 0 – 10V voltmeter and a 0 – 250 mA ammeter. Its 5 Watt wire-wound resistors are connected inside the unit.
Last updated: October 2026
Key Features
Built-in fixed 9V DC regulated supply
Moving coil voltmeter 0 – 10V DC, ±1.5%
Moving coil ammeter 0 – 250 mA DC
Wire-wound 5 Watt resistors, internally connected
Circuit diagrams on a bakelite front panel
4mm shrouded banana sockets
Technical Specifications
Specification
Value
Power supply
Fixed 9V DC regulated (optional 0-12V variable)
Voltmeter
Moving coil, 0 – 10V DC, ±1.5%
Ammeter
Moving coil, 0 – 250 mA DC
Resistors
Wire-wound, 5 Watts, internally connected
Front panel
Bakelite
Terminals
4mm shrouded sockets (banana type)
Dimensions
280mm x 205mm x 85mm (nominal)
About This Product
Students wire the resistors in series and then in parallel, read the voltage and current with the built-in meters, and compare the measured resistance with the value worked out from the formulas. The same set-up shows Kirchhoff’s current and voltage laws in action.
Frequently Asked Questions
Does the apparatus include its own supply and meters?
Yes. It has a built-in 9V DC supply, a 0 – 10V voltmeter and a 0 – 250 mA ammeter.
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