A Resistance Coil is a fundamental component used in electrical and physics experiments to study the behavior of electric current, resistance, Ohm's Law, and heating effects of electricity. It consists of a coiled wire of known resistance value mounted on a base or stand.
Material: Wound wire made of nichrome, constantan, or manganin (materials with stable resistivity)
Resistance Range: Typically available from 1 ohm to 100 ohms (customizable)
Mounting: Fixed on an insulating bakelite or wooden base
Terminals: Two metal binding posts for easy wire connection
Optional: Marked resistance value and wire specifications
Verification of Ohm’s Law
Studying series and parallel combinations of resistors
Demonstrating Joule’s law of heating
Used in CBSE/ICSE/State board physics practicals and engineering labs
Integral part of electrical circuit building and testing
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