Physics in Action Electromagnetism Lab Instructions - Engineering Assignment Help

Assignment Task

Learning outcomes

• On successful completion of this laboratory work, you should be able to:
• Use an oscilloscope to display a time-varying signal and make measurements of the characteristics of that signal.
• Measure the voltage induced in a coil by one of:
• a moving magnet
• a changing magnetic ?eld from another coil
• Systematically investigate the factors affecting inductive coupling
• Gather data appropriate for inclusion in a formal technical report.

SAFETY FIRST

• If you are unsure of your experimental setup, ask the demonstrator.
• Be careful with the wire used for the coils, ends may be sharp.
• Strong magnets may cause pinch injury. Be careful.
• When the magnet is spinning on the motor, it may come loose. Keep your face and hands away from motor and wear eye protection.

Background to the experiments

To understand electromagnetism it is important to build up a practical understanding of the relationship between magnetism and the way in which voltages and currents can be induced in circuits. You will investigate one of two methods of inducing a voltage in a coil:by moving a magnet near a coil by placing a coil near another coil which is producing a varying magnetic ?eld.

Both methods have numerous applications in science and technology.

This project will extend over two weeks. The ?rst week will concentrate on developing an understanding of electromagnetic induction, particularly the fundamental relationships between the voltage induced and the method of inducing it. Along the way, you will learn to use an oscilloscope to display and measure time-varying voltages.

The second week will involve developing an application of this knowledge to either:
a. build a revs/sec meter or
b. make a metal detector

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