Quick Answer: The Potentiometer Apparatus has 10 parallel wires, 10 metres in total, mounted on a polished hardwood base with a 100 cm scale. Brass contact blocks and 4 mm brass binding posts make the connections.
Last updated: October 2026
Key Features
Ten parallel resistance wires, 10 metres total length
24 SWG wire with a low temperature coefficient
Seasoned, polished hardwood base
100 cm scale reading to 1.0 mm
Heavy brass contact blocks
4 mm brass binding posts
Technical Specifications
Specification
Value
Wires
10 parallel, 10 metres total
Wire gauge
24 SWG
Base
Seasoned, polished hardwood
Scale
100 cm, 1.0 mm divisions
Contacts
Brass blocks
Terminals
4 mm brass binding posts
About This Product
A potentiometer measures potential difference by a null-balance method, so no current is drawn from the cell at balance. Students use it to compare the EMFs of two cells, to find the internal resistance of a cell and to measure small potential differences along a uniform wire. Laboratories and colleges in Malawi, Antigua and Barbuda, North Macedonia, Colombia and Laos can buy the Potentiometer Apparatus through an export order.
Frequently Asked Questions
How long is the wire on the Potentiometer Apparatus?
It has 10 parallel wires giving 10 metres in total, read against a 100 cm scale.
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