Quick Answer: Electrical Resistance Coil Unit is a fixed resistance component with resistance wire wound on an insulating support, used in Ohm's law, series-parallel and resistance-measurement experiments.
Last updated: October 2026
Key Features
Fixed resistance element
Resistance wire wound on an insulating support with accessible terminals
Passive: no battery inside the unit
Several units can be combined in series or parallel
Supplied as one unit; supply, meters and leads not included
Technical Specifications
Specification
Value
Product type
Fixed laboratory resistance component
Construction
Resistance wire wound on an insulating support
Connections
Accessible terminals
Pack contents
One resistance coil unit
About This Product
Wired in series with an ammeter, with a voltmeter across it, the coil unit gives a steady resistive load for finding resistance from voltage and current readings. Electrical And Electronics students can also join two or more units to study equivalent resistance, voltage division and current division, or compare an unknown resistance on a meter bridge.
Frequently Asked Questions
Q1. Can several Electrical Resistance Coil Units be connected together? Yes. Compatible units can be joined in series or parallel to show changes in equivalent resistance, as long as each unit stays within its electrical and thermal ratings.
Q2. Why does the resistance coil become warm? Current through the winding turns electrical energy into heat. Excessive heating means the operating limits may be exceeded.
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