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Inductance of solenoids with Cobra3

Product No: P2440311

Principle

A square wave voltage of low frequency is applied to oscillatory circuits comprising coils and capacitors to produce free, damped oscillations. The values of inductance are calculated from the natural frequencies measured, the capacitance being known.

Tasks

To connect coils of different dimensions (length, radius, number of turns) with a known capacitance C to form an oscillatory circuit.
From the measurements of the natural frequencies, to calculate the inductances of the coils and determine the relationships between:

inductance and number of turns
inductance and length
inductance and radius.

What you can learn about

Lenz's law
Self-inductance
Solenoids
Transformer
Oscillatory circuit
Resonance
Damped oscillation
Logarithmic decrement
Q factor

Materiallist (Excerpt)	Product	Amount
Cobra3 BASIC-UNIT, USB	12150-50	1
Measuring module function generator	12111-00	1
Coil, 1200 turns	06515-01	1
Induction coil,300 turns,dia.40mm	11006-01	1
Induction coil,300 turns,dia.32mm	11006-02	1
Induction coil,300 turns,dia.25mm	11006-03	1
Induction coil,200 turns,dia.40mm	11006-04	1
Induction coil,100 turns,dia.40mm	11006-05	1
Induction coil,150 turns,dia.25mm	11006-06	1
Induction coil, 75 turns,dia.25mm	11006-07	1
Power supply 12V / 2A	12151-99	2
Connection box	06030-23	1
Software Cobra3 Universal recorder	14504-61	1
Capacitor 470nF/250V, G1	39105-20	1
Connecting cord, 32 A, 500 mm, red	07361-01	2
Connecting cord, 32 A, 500 mm, blue	07361-04	2
Connecting cord, 32 A, 250 mm, red	07360-01	1
Connecting cord, 32 A, 250 mm, blue	07360-04	1
Laboratory Experiments Physics, Chemistry, Biology andApplied Sciences, CD-ROM, incl. operating manuals	16502-42	1