Resistance Coil Unit 1 Ohm
.jpg)
Product Code : SCL-AM-12116
Resistance Coil Unit 1 Ohm (SKU SCL-AM-12116) is a bench-mounted 1 Ω reference resistor of manganin wire, bifilar-wound on a plastic spindle and sealed in a clear polymer shell on a compact base plate, with nickel-plated brass 4 mm posts. It is used for Ohm's law, bridge and circuit-network practicals in schools and colleges. Science Lab Supplies manufactures the unit in Saha, Ambala, India (Plot 448, HSIIDC Industrial Area) and offers it factory-direct to schools, colleges, tender contractors and distributors.
Specifications
Each technical detail of this unit has its own row in the table below. Overall, it is a 1 Ω ±1% manganin standard in a non-inductive winding, held in an impact-resistant transparent cylindrical casing on a space-saving base, with two nickel-plated brass binding posts and knurled plastic caps.
| Specification | Value |
|---|---|
| SKU | SCL-AM-12116 |
| Nominal resistance | 1 Ω |
| Accuracy tolerance | ±1% |
| Conductor | High-grade manganin (copper-manganese-nickel) wire |
| Winding | Bifilar, non-inductive |
| Former | Heat-resistant, rugged plastic spindle |
| Housing | Clear, impact-resistant polymer shell; compact cylindrical bench unit |
| Base | Space-saving base plate |
| Terminals | Two 4 mm nickel-plated brass binding posts with knurled plastic caps |
| Terminal compatibility | Banana plugs, spade connectors, crocodile clips or bare wire |
| Current limit | Avoid sustained currents above 1 A |
| Documentation | Technical card with resistance data |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Resistance Coil Unit
The unit sits flat on the bench as a fixed, known resistance that does not drift as it warms, so students can trust it as the reference in any circuit. It is standard electricity and magnetism lab kit for schools and a useful component in college bridge and network practicals.
- Class 10 and 12 physics: Ohm's law with the current read on an LCD Display Digital Ammeter.
- Known arm in Wheatstone bridge and potentiometer work, closed briefly with a Tapping Key Physics Lab to protect the galvanometer.
- Series and parallel networks to measure equivalent resistance.
- B.Sc. and diploma labs: checking meter readings against a known resistance.
Power it from a low-voltage DC supply, keep the current below 1 A, and do not over-tighten the terminal caps.
Standard Scope of Supply
The supply consists of one Resistance Coil Unit 1 Ohm with its integrated terminal posts and base, plus a technical card giving its resistance data. Supplies, meters, keys and leads are not included with the unit; they are listed separately and can be added to the same quotation when required.
Packing, MOQ and Lead Time
A quote can be prepared for a single unit or for one on every student bench. Science Lab Supplies sets out packing, delivery time and price for that quantity, and keys, meters, bridges or resistance boxes for the same electricity practicals can be added.
Science Lab Supplies has an Importer-Exporter Code and is able to ship to buyers in Sri Lanka, Vietnam, Malaysia, Peru, Egypt and Iraq. The business is registered under Udyam as a manufacturing enterprise (UDYAM-HR-01-0014546) and for GST (GSTIN 06ADEPJ0574F2ZU). Use the contact page or enquiry cart to ask for prices, and the lab tender page for tender enquiries.
Frequently Asked Questions
How does the Resistance Coil Unit 1 Ohm differ from the Resistance Coil 1 Ohm?
Both are 1 Ω ±1% bifilar manganin coils in clear housings. This unit sits on a space-saving base plate and uses nickel-plated brass posts with knurled caps; the other has colour-coded brass posts.
What is the benefit of bifilar winding?
The wire is doubled back on itself so the currents in adjacent turns flow in opposite directions and their magnetic fields cancel. The unit therefore has minimal self-inductance in AC as well as DC circuits.
Can it be used for high-voltage or high-power work?
No. It is intended for low-voltage, low-current teaching experiments and student workshops. Sustained currents above 1 A heat the wire and can permanently shift the resistance value.
Is Science Lab Supplies the manufacturer or a trader?
It is the manufacturer: the unit is built at the company's own premises in Saha, Ambala, India. Buyers therefore deal with the producer directly, and no trading house sits between the factory and the customer.
Related Resistance Standards and Meters
These items from the Applied Mechanics, Electrical and Electronics and Lab Meters ranges complete a resistance-measurement bench, from a variant coil and resistance boxes to a bridge board, an Ohm's law kit and panel meters, and any of them can share a quotation.
- Resistance Coil 1 Ohm — 1 Ω ±1% manganin coil with colour-coded brass posts.
- Post Office Box Plug Type — 3- or 4-ratio P.O. box with sixteen coils in a wooden box.
- Resistance Substitution Box — 10 Ω to 1 MΩ in 24 steps, 5%, 1/2 W.
- Resistance Box Electronic Type — versions from 50 Ω to 1000 Ω.
- Portable Wheatstone Bridge Apparatus Circuit Board — four-arm bridge with centre-zero galvanometer, 1 Ω to 10 MΩ.
- Ohms Law Kit Apparatus — built-in 0–12 V DC variable supply with dual-range meters.
- Ammeter — DC meter on a bakelite or acrylic stand with lock-type terminals.
- Voltmeter — DC meter on a bakelite or acrylic stand, common ranges.
Browse the full Applied Mechanics range, the Lab Meters range for ammeters and voltmeters, or all physics lab equipment.
Last updated: 9 October 2026
.jpg)
 (1).png)
.jpg)
