Quick Answer: Laboratory Nichrome Coil Wire is a nickel–chromium resistance and heating wire supplied in coil form for resistance coils, rheostat winding and supervised low-voltage heating-effect experiments.
Last updated: October 2026
Key Features
Nickel–chromium resistance alloy
Supplied as a wire coil for unwinding, measuring and cutting
Converts electrical energy into heat when current flows
Used for rheostats, resistance coils and Joule-heating demonstrations
Wire only: no former, terminals or power supply included
Technical Specifications
Specification
Value
Product type
Electrical resistance and heating wire
Alloy family
Nickel–chromium alloy
Supply form
Wire coil
About This Product
Before winding, students calculate the length, current and expected power, then wind the wire on a heat-resistant insulating former and raise the current gradually from a current-limited supply while watching the temperature. Anyone using this wire from the Magnetism range should switch off and let it cool before touching it, because Nichrome can become hot enough to cause burns or ignite nearby materials.
Frequently Asked Questions
Q1. Why does Nichrome wire become hot in a circuit? Its electrical resistance converts electrical energy into heat as current flows. The amount of heating depends on resistance, current, wire dimensions and how well the heat can escape.
Q2. Can Laboratory Nichrome Coil Wire be used to wind a rheostat? Yes, when its gauge, resistance and current capacity match the rheostat design and a suitable winding former is used.
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