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Portable Electrical Resistance Bridge

Portable Electrical Resistance Bridge

Product Code : SCL-EAE-11162

Quick Answer: Portable Electrical Resistance Bridge is a bridge apparatus for comparing resistances and finding an unknown resistance by the Wheatstone bridge balance method, using 24 SWG constantan wire on a wooden metre scale and a pencil jockey.

Last updated: October 2026

Key Features

  • 24 SWG constantan resistance wire
  • Wooden metre scale for reading the balance length
  • Pencil jockey for locating the null point
  • For low-voltage DC use under instructor supervision

Technical Specifications

SpecificationValue
Resistance wire24 SWG constantan
ScaleWooden metre scale
ContactPencil jockey

About This Product

Students connect known and unknown resistances with a galvanometer, key and low-voltage DC source, then move the jockey along the wire until the galvanometer shows zero or minimum deflection. The balance length read from the scale is used to work out the unknown resistance in this Electrical And Electronics practical.

Frequently Asked Questions

Q1. How is the null point found?
Move the pencil jockey gently along the bridge wire and watch the galvanometer; the null point is where its deflection becomes zero or minimum.

Lab Equipments Ambala supplies institutions and distributors in Nicaragua, Poland and New Zealand, as part of its export work to 80+ countries.

Questions about the Portable Electrical Resistance Bridge? Write to Lab Equipments Ambala.

   
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