Magnet Labs

LCHS Physics

Ewoldsen

Magnet LabsMagnet Labs1. Magnetic Field Lines with Iron Fi

lings2. Magnetic Field Lines with Compa

sses3. Electromagnet4. Solenoid5. Door Chimes

Magnetic Field Magnetic Field Lines LabLines Lab

LCHS Physics

Ewoldsen

• DO NOT put filings directly on magnetDO NOT put filings directly on magnet

• This is a lab my son just did in second grade

• We will extend the lab however by adding extra magnets.

• Make sure that your magnets are true by first checking to see if N - S attract and N – N or S – S repel

• Place the magnets on the table as indicated on the as indicated on the following pagesfollowing pages and place the manila folder over it

• Add iron filings, draw the pattern on your lab paper

• Arrows () start at North and point towards South

• Return filings to the shaker.

• DO NOT put filings directly on magnetDO NOT put filings directly on magnet

NNSS

SS NN

NN NN

NN SS

NN SS

NNSS

NN SS

NN

SS

NN

SS

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Magnetic Field Magnetic Field Lines with Lines with CompassesCompasses

This is what you will be mapping

NNSS

NN SS

NN

SS

NN

SS

You will draw a minimum of 50 lines – equal number from

each magnet

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NN

SS

Electromagnet Electromagnet LabLab

LCHS Physics Ewoldsen

Fill in the following chart using the

procedure outlined in the picture

Vary # loops, and volts

WARNING: The wire will become extremely hot!

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Number of Staples picked up

5 coils

10 coils

15 coils

20 coils

25 coils

30 coils

35 coils

40 coils

45 coils

50 coils

And more if possible

Soleniod and Soleniod and CurrentCurrent

SolenoidsNN SSNN SSNN SSNN SSNN SS NN SS

What happens to the current when you change the direction and speed? What happens if you change the direction of the magnet?

AReturn to Table of Contents

Door Chimes Door Chimes

Observation onlyObservation only

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What would happen if we placed a bell under the nail and switched the generator on and off?