Home /
Physics /
Physics Experiments /
Electronics /
Components and basic circuits /
Current and voltage sources /
Determining the internal resistance of a battery /
Determining the internal resistance of a battery

Determining the internal resistance of a battery

VP4.1.1.1

This product is classified as a dangerous good and is not available for online purchase.

For ordering the dangerous good or other information please contact our customer service center.
This experiment/set up contains dangerous goods.
These are not available for online purchase.
You may order the experiment/set up without the dangerous goods.

For ordering the dangerous good or other information please contact our customer service center.
Email: webshopuk@ld-didactic.de
Telephone:+49 (0) 22 33 / 604 – 319
Go to contact form

Request an offer

Name *

Email *

Thank you for your inquiry. We will get back to you as soon as possible.

Description

In the experiment P4.1.1.1, a rheostat as an ohmic load is connected to a battery to determine the internal resistance. The terminal voltage U of the battery is measured for different loads, and the voltage values are plotted over the current I through the rheostat. The internal resistance R_i is determined using the formula

by drawing a best-fit straight line through the measured values. A second diagram illustrates the power

as a function of the load resistance. The power is greatest when the load resistance has the value of the internal resistance R_i.

Components of equipment sets

1	57686 4	Monocell holder STE 2/50
1	57681 4	Plug-in board safety socket, 20/10
1	68548 8	Mono cell 1.5 V (IEC R20)
2	531120	Multimeter LDanalog 20
1	537321	Rheostat 9.5 Ohm
5	500614 4	Safety experiment cable, 25 cm, black

Experiment Instructions

PDF (Experiment description)

P4.1.1.1 Determining the internal resistance of a battery

Print page

Technical Service & Support:

Online Service Portal
Do you have any questions or suggestions regarding our devices, products, experiments, equipment sets or about our software? You need spare parts? FORM

Repair Service
You would like to register a repair? FORM

Europe

For European distributors, please visit: European distributors

Worldwide requests

Determining the internal resistance of a battery

Description

Components of equipment sets

Experiment Instructions

Contact Us