Technical data

Ohm's law with Cobra SMARTsense

Article no: P1372469

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Principle

Ohm's law states that the strength of the electric current I flowing through an object is proportional to the electric voltage U. The proportionality factor here is the so-called electric resistance R. The proportionality factor here is the so-called electrical resistance R.

Benefits

Particularly comprehensible and didactically prepared description of the experiment (reference to everyday life, etc.) incl. protocol questions.
Contact saftey due to puzzle blocks system with corrosion-free gold plated contacts
Doubled earning sucess: Electric circuit diagram on top, real components can be seen unterside
Future-oriented teaching: Integration of sensors (Cobra SMARTsense) into digital science education

Tasks

What is the relationship between voltage and current?

Determine a series of pairs of measured values for voltage and current in a circuit and use them to investigate the relationship between U and I.

Learning Objectives

Students should first identify Ohm's law I ∼ U based on the measured values they have determined.

Then they should also find the condition R = constant for the validity of this law.

Scope of delivery

Angled connector module, SB	05601-02	2
Interrupted connector module with sockets, SB	05601-04	2
Angled connector module with socket, SB	05601-12	2
On-off switch module, SB	05602-01	1
Socket module for incandescent lamp E10, SB	05604-00	1
Resistor module 50 Ohm, SB	05612-50	1
Resistor module 100 Ohm, SB	05613-10	1
Filament lamps 12V/0.1A, E10, 10 pieces	07505-03	1
PHYWE Power supply, 230 V,DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A	13506-93	1
Connecting cable, 32 A, red, various lengths	07360-01	1
Connecting cable, 32 A, blue, various lengths	07360-04	1
Connecting cable, 32 A, red, various lengths	07361-01	2
Connecting cable, 32 A, blue, various lengths	07361-04	2
measureAPP - the free measurement software for all devices and operating systems	14581-61	1