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Moving Coil Galvanometer
Moving Coil Galvanometer (Product Code: SCL-357/077) is a centre-zero DC meter used to detect small currents and locate null points in bridge and potentiometer experiments in school and college physics laboratories. It has a 30-0-30 scale, comes with a stand, and has diode protection against overload up to 12 V DC. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Moving coil, centre zero (universal galvanometer type), DC, with stand |
| Scale | 30-0-30 |
| Sensitivity | 200 microampere, as listed (confirm whether per division or full scale when ordering) |
| Overload protection | Diode protection up to 12 V DC |
| AC use | Suitable as an indicator in slow AC |
| Product code | SCL-357/077 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is the Moving Coil Galvanometer Used For?
Because the pointer rests at the centre, the meter shows both the presence and the direction of a small current. As a galvanometer for school laboratories, its main job is null detection in meter bridge, Wheatstone bridge and potentiometer practicals: students move the jockey until the pointer returns to zero, then read the balancing length.
It is also used to demonstrate electromagnetic induction, where pushing a magnet into a coil and pulling it out swings the pointer first one way and then the other. Tap the jockey briefly rather than holding it down, and add a high resistance in series for the first trials so the pointer stays on scale.
What to Specify When Ordering
- Confirm that the 30-0-30 scale and the listed 200 microampere sensitivity suit your experiments.
- Quantity required, usually one per bridge or potentiometer set.
- Whether resistance boxes, jockeys or plug keys should be quoted with it.
Supplier
Jain Scientific Equipments Private Limited trades as ScienceLab and supplies this moving coil galvanometer from Ambala, Haryana, to schools, colleges, institutions and dealers in India and international markets. The company sources it for customers who want galvanometers, bridges and resistance boxes from a single supplier, so one quotation can cover the whole electricity bench. Company background is on the ScienceLab profile.
Related Physics Lab Equipment
A galvanometer is rarely used on its own. These items complete typical null-detection circuits:
- Meter Bridge — the bridge in which the galvanometer finds the balance point.
- Jockey — the sliding contact tapped along the bridge wire.
- Resistance Box 1-5000 Ohm Range — provides high series resistance to protect the meter.
- Galvanometer 50-0-50mV — an alternative meter with a different range.
More meters and circuit apparatus are in the Physics Lab category.
Frequently Asked Questions
What scale does the Moving Coil Galvanometer have?
The Moving Coil Galvanometer has a centre-zero 30-0-30 scale, so the pointer can deflect either way to show the direction of current. This centre-zero layout is what makes it suitable as a null detector in bridge and potentiometer experiments.
What sensitivity is listed for the Moving Coil Galvanometer?
The Moving Coil Galvanometer is listed with a sensitivity of 200 microampere. The listing does not make clear whether this is per division or for full-scale deflection, so please confirm the figure you need through the contact page before ordering.
Is the Moving Coil Galvanometer protected against overload?
Yes. The Moving Coil Galvanometer has diode protection against overload up to 12 V DC, which helps protect the movement when a jockey is pressed far from the balance point. A series resistance during first trials is still recommended.
Can the Moving Coil Galvanometer be used with AC?
The Moving Coil Galvanometer is a DC instrument, but it is described as suitable as an indicator in slow AC, where the pointer can follow a slowly alternating current. It is not intended for measuring mains-frequency AC values.
Who supplies the Moving Coil Galvanometer?
The Moving Coil Galvanometer is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab) of Ambala, Haryana, India. The company supplies it to schools, colleges, dealers and importers in India and international markets, and can quote it together with meter bridges, jockeys and resistance boxes.
Is a calibration certificate available for the galvanometer?
A calibration certificate is not part of the standard listing for the Moving Coil Galvanometer. If your institution requires one, mention it in your enquiry through the contact page so we can confirm what documentation is possible before you place an order.
Request a Quote
Ask for a quotation on the Moving Coil Galvanometer through the contact page or add it to the enquiry cart with any accessories you need.
Last updated: 24 September 2026
