Technical data

Switching on coils with Cobra SMARTsense

Article no: P6301469

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Principle

In this experiment, self-induction is investigated - a property of coils in which a voltage is generated by changing the current. This counteracts the change in current and leads to a time delay when switching on and off.

Tasks

What effect does a coil have when closing a DC circuit?
Investigate the voltage across a resistor connected in series with a coil.

Learning objective

The aim of the experiment is to learn that when a coil is switched on, a self-induction voltage is created which counteracts the increase in current.

Advantages

Simple setup in just a few minutes.
High resolution data acquisition (up to 10 kHz).
Improved media competence.
Safe student power supply (RiSU-compliant).

Scope of delivery

Plug-in board, for 4 mm plugs	06033-00	1
Coil, 400 turns	07829-01	1
Coil, 800 turns	07829-03	1
Iron core, U-shaped, laminated	07832-00	1
Iron core, I-shaped, laminated	07833-00	1
Tightening screw	07834-00	1
Connecting cable, 32 A, red, various lengths	07360-01	2
Connecting cable, 32 A, blue, various lengths	07360-04	2
Connecting cable, 32 A, red, various lengths	07361-01	1
Connecting cable, 32 A, blue, various lengths	07361-04	1
measureAPP - the free measurement software for all devices and operating systems	14581-61	1
Resistor 100 Ohm, 1W, G1	39104-63	1
PHYWE Power supply, 230 V,DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A	13506-93	1
Wire building block, housing G1	39120-00	2
on-off switch, G1	39139-00	1