Measuring the wavelength of a magnet

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Measuring the wavelength of a magnet

Aim

In this experiment we are aiming to find the wavelength of a bar magnet that has been hung down into a solenoid.

Diagram

Apparatus

Solenoid

Connecting leads (4)

Bar magnet

20g weight

Spring

Boss Clamps (2)

Clamps (2)

Stand

Laptop

Interface

Laptop leads

Voltmeter

Method

Place the stand on the table and screw the two boss clamps on. Place the clamps in the boss clamps and tighten the screws. Open the bottom clamp wide enough for the solenoid to fit in and then tighten the screw. The solenoid needs to be put in upside down. Hook the spring onto the clamp and then attach the bar magnet. The bar magnet needs to be hanging down so that it is ¼ of the way down on the magnet or ¾ of the way down in the magnet (as shown in the diagram below).

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Adjust the boss clamp so the bar magnet hangs down in a perfectly central position in the solenoid. Then attach the 20g weight to the bar magnet. Connect the connecting leads into the solenoid and then connect both leads into the voltmeter. Then connect the voltmeter to the battery. Then connect the interface to the voltmeter and connect the laptop to the interface. To get a reading carefully pull or push down the magnet so that it moves up and down inside the solenoid making sure that it does ...

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