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# Measuring the wavelength of a magnet

Extracts from this document...

Introduction

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

Middle

Laptop

Interface

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).

Adjust the boss clamp so the bar magnet hangs down in a perfectly central position in the solenoid.

Conclusion

Conclusion

When the magnet moves fast through the solenoid a lot of current is produced, but if the magnet moves slowly then the current is smaller. Only movement of the magnet causes current to be produced. If the magnet is left inside the solenoid then there will be no data plotted in the graph. The movement of the magnet causes the magnetic field to change and so produces the current. The wavelength decreases because the movement of the magnet inside the solenoid is reduced so the magnetic field changes less and causes less current to be produced.

This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.

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