Resistance Box 1-5000 Ohm Range Manufacturer,Supplier and Exporter in India
Product Code : EL-PL-12412
Jlab Export is a leading Resistance Box 1-5000 Ohm Range Manufacturer,and suppliers in India
Resistance Box 1-5000 Ohm Range (code EL-PL-12412) is a wide-range plug box in which brass plugs and 1/2 inch brass blocks switch constantan coils in and out, housed in a teak wood case and covering 1 to 5000 ohm. The upper range suits circuits that need several thousand ohms in series. Each box comes from JLab’s production in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Model | JL347/072 |
| Type | Plug type, brass plugs |
| Range | 1 to 5000 ohm |
| Coils | Constantan |
| Blocks | 1/2 inch brass blocks |
| Case | Teak wood |
| Quality check | Each resistance box is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Product code | EL-PL-12412 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Where the Higher Range Helps
A resistance of a few thousand ohms is what turns a sensitive galvanometer into a voltmeter: the series resistance is R = V / Ig − G, where Ig is the full-scale current and G the coil resistance. The same box can sit in series with the galvanometer during potentiometer or bridge work, keeping the deflection on scale while the balance point is still far away, and is then plugged back to zero for the final reading. It also lets an Ohm’s law circuit run at only a few milliamps.
Setting and Reading the Box
Every plug withdrawn adds the coil beneath it, so the value in circuit is the sum of the coils at the open gaps. Twist each plug gently as it goes home to make good contact, and check that all plugs are tight before trusting a low reading.
Other Resistances and Meters
- Resistance Box — the same construction with a range up to 1000 ohm.
- Moving Coil Galvanometer — centre-zero galvanometer to pair with a high series resistance.
- Potentiometer, 10 wire — constantan wire potentiometer for EMF and internal resistance work.
The Physics Lab category covers the rest of the current electricity range.
Request a Quote
Enquire on the contact page or add this box via Add To Cart, quoting model JL347/072, the number of boxes and the delivery point.
Last updated: 26 October 2026
