Apparatus for Studying f.e.m. and Internal Battery and Battery Resistance
Product Code : JL-GLE-11259
The Apparatus for Studying f.e.m. and Internal Battery and Battery Resistance, SKU JL-GLE-11259, is a JaincoLab emf and internal resistance apparatus ("f.e.m." is the French abbreviation for electromotive force). Three batteries of 3-4.5 V in their boxes are connected through a rheostat and a switch, while a digital ammeter and voltmeter record current and terminal voltage. Plotting voltage against current gives the emf as the intercept and the internal resistance from the slope.
Specifications
Contents per the listing:
| Product | Apparatus for Studying f.e.m. and Internal Battery and Battery Resistance |
| SKU | JL-GLE-11259 |
| Cat. No. | JSS-241/030 |
| Batteries | 3, 3-4.5 V, with boxes |
| Ammeter | Digital |
| Voltmeter | Digital |
| Rheostat | Variable resistor for setting the current |
| Leads | 6 pairs, red and blue connectors |
| Switch | Power switch, 36 V, 0-3 A DC |
Experiments on emf and internal resistance
With the apparatus, students can:
- Measure terminal voltage at several currents set with the rheostat
- Find the emf and internal resistance from a voltage-current graph
- Compare the three batteries, singly or in series
- Show how terminal voltage falls as more current is drawn
Scope of supply and ordering
Supplied with the batteries and boxes, both digital meters, rheostat, leads and switch; the listing does not give the rheostat value or the battery type, so these are confirmed on the quotation with the number of sets.
Frequently asked questions
What does f.e.m. mean?
It is the French abbreviation for electromotive force (emf).
What voltage are the batteries?
3-4.5 V, as listed; three are included with their boxes.
How is the current varied?
With the rheostat, and read on the digital ammeter.
What connectors do the leads have?
Red and blue connectors; six pairs are included.
Related products
Cells, meters and circuit apparatus are in the JaincoLab general lab equipment range.
Request a quote
For pricing on the emf and internal resistance apparatus (JL-GLE-11259), use the contact page. Institutions and contractors buying under a tender can also reach us via the tenders page.
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