Portable Electrical Resistance Bridge

Product Code : SCL-EAE-11162

The Portable Electrical Resistance Bridge is a physics laboratory apparatus used for resistance comparison, Wheatstone bridge experiments, and practical study of electrical balance conditions. It is suitable for school physics laboratories, colleges, STEM classrooms, electrical practical labs, distributors, and institutional procurement buyers.

Product Description

The Portable Electrical Resistance Bridge from Lab Equipments Ambala is best aligned with the verified Meter Bridge or Wheatstone Bridge With Pencil Jockey, listed under Physics Lab / Electrical and Electronics. The verified related product.

This apparatus supports bridge-method experiments where students compare an unknown resistance with known resistance values. The closest verified Lab Equipments Ambala information states that the meter bridge or Wheatstone bridge uses 24 SWG constantan wire on a wooden meter scale and is used for resistance and bridge experiments.

Key Features

• Bridge experiment apparatus: supports Wheatstone bridge and resistance comparison practicals.
• Verified related product: closest confirmed listing is Meter Bridge or Wheatstone Bridge With Pencil Jockey.
• 24 SWG constantan wire: verified for the related Lab Equipments Ambala meter bridge listing.
• Wooden meter scale format: suitable for visible, hands-on school physics experiments.
• Pencil jockey use: supports locating the balance point along the resistance wire.
• Low-voltage practical work: used with suitable cells or DC supply under instructor supervision.
• Capacity not applicable: this is an electrical resistance bridge, not a volume or mass measuring item.

Technical Specifications

What's Included in the Kit

• Portable Electrical Resistance Bridge main apparatus
• Meter bridge / Wheatstone bridge base with resistance wire
• Pencil jockey
• Terminal posts or binding screws
• Instruction sheet or experiment manual
• Resistance box, galvanometer, plug key, connecting leads, and power source

Applications / Uses

• Determining unknown resistance by Wheatstone bridge balance method
• Studying the condition for a balanced electrical bridge circuit
• Comparing known and unknown resistances in school physics practicals
• Teaching null-deflection method using a galvanometer
• Demonstrating resistance variation along a uniform wire
• Supporting practical work in electricity, current electricity, and electrical measurements

How to Use the Portable Electrical Resistance Bridge

1. Place the resistance bridge on a clean, dry, stable laboratory bench.
2. Connect the bridge circuit according to the teacher-approved Wheatstone bridge diagram.
3. Connect the known resistance, unknown resistance, galvanometer, key, and low-voltage DC source.
4. Move the pencil jockey gently along the bridge wire to locate the null point.
5. Observe the galvanometer and identify the position where deflection becomes zero or minimum.
6. Record the balance length on the meter scale.
7. Calculate the unknown resistance using the bridge balance relationship given in the practical manual.
8. Switch off the supply before changing resistance values or circuit connections.

Safety note: Use the Portable Electrical Resistance Bridge only with a suitable low-voltage DC supply under instructor supervision. Do not connect the apparatus to mains electricity, do not press the jockey harshly on the wire, and avoid overheating the resistance wire by leaving current on unnecessarily.

Care & Maintenance

• Keep the bridge wire clean, straight, and free from kinks or corrosion.
• Store the apparatus in a dry cabinet after use.
• Use the pencil jockey gently to prevent damage to the wire and scale surface.
• Check terminals, screws, leads, and wire continuity before each laboratory session.

Why Choose Lab Equipments Ambala

Lab Equipments Ambala manufactures and exports scientific laboratory instruments, lab experiment setups, science kits, mathematics kits, didactic models, and STEM models. The brand supplies physics laboratory equipment, electrical and electronics apparatus, lab meters, resistance boxes, bridge apparatus, and practical teaching resources for educational institutions. Its equipment range supports hands-on practical learning in electricity, measurement, magnetism, and electronics. Buyers should request final specifications before procurement to confirm the exact product name, product code, supplied accessories, dimensions, packing, and documentation.

Frequently Asked Questions

What is a Portable Electrical Resistance Bridge used for?

A Portable Electrical Resistance Bridge is used to compare resistance values and determine an unknown resistance using the Wheatstone bridge balance method.

What is the closest verified Lab Equipments Ambala product?

The closest verified product is Meter Bridge or Wheatstone Bridge With Pencil Jockey, Product Code EL-EAE-10289.

What wire is used in the verified related meter bridge?

The verified related listing states that the meter bridge uses 24 SWG constantan wire on a wooden meter scale.

Does the apparatus include a pencil jockey?

The closest verified product name includes a pencil jockey, but the exact contents for a product named Portable Electrical Resistance Bridge should be confirmed before publishing.

What supporting instruments are required?

Typical Wheatstone bridge practicals require a resistance box, galvanometer, key, connecting leads, and a low-voltage DC source. Confirm whether these are included or supplied separately.

Can students connect the bridge to mains electricity?

No. The apparatus should be used only with a suitable low-voltage DC supply under instructor supervision and must never be connected directly to mains electricity.

For related electrical measurement equipment, explore Meter Bridge or Wheatstone Bridge With Pencil Jockey, Electrical and Electronics equipment, Resistance Box Plug Type, and Galvanometer for confirmed specifications and institutional enquiries.