Quick Answer:The Brass Wire (100gm) is a 100 g spool of copper-zinc (alpha-brass) wire for physics work on Young’s modulus, thermal expansion and electrical conduction. It has a bright-annealed, smooth finish.
Last updated: 18 October 2026
Key Features
Alpha-brass, a copper-zinc alloy.
100 g net on each spool.
Bright-annealed, smooth surface.
Low resistivity, so it can serve as a conductor in bridge and potentiometer circuits.
Supplied in common SWG gauges.
Technical Specifications
Specification
Value
Material
Alpha-brass (copper–zinc alloy)
Net weight
100 g per spool
Gauge
Common SWG sizes
Finish
Bright-annealed, smooth
Packing
Wound on a spool
How It Is Used
Lengths are cut from the spool as needed: stretched under load for elasticity and Young’s modulus measurements, heated for thermal expansion work, or connected into meter bridge and potentiometer circuits. Using it alongside other wires lets students compare the properties of different metals.
Frequently Asked Questions
Which experiments is the Brass Wire (100gm) used for?
Young’s modulus and elasticity tests, thermal expansion experiments, and as a low-resistivity conductor in bridge and potentiometer circuits.
