New PDF release: Charging Ahead: An Itroduction to Electromagnetism (PB155X)

By Larry E. Schafer

ISBN-10: 0873551885

ISBN-13: 9780873551885

Energize your subsequent unit on electrical energy with hands-on actions to give an explanation for the interesting phenomenon of electromagnetism. scholars are brought to the criteria that make sure the energy of electric coils, and so they use on hand fabrics to construct an easy motor and a generator. issues lined contain circuit breakers, mag-lev trains, and superconducting turbines.

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Additional resources for Charging Ahead: An Itroduction to Electromagnetism (PB155X)

Example text

1 8 Rotor Flopper Penny switch Washer When a rotor magnet is directly over the flopper magnet, the flopper magnet moves downward and the switch end of the flopper moves upward. + + - - 7. When a rotor magnet is directly over the flopper magnet, what happens to the middle penny of the penny switch? When a rotor magnet is directly over the flopper magnet, the switch end of the flopper pulls the middle penny upward. 8. When a rotor magnet is directly over the flopper magnet, is the penny switch on (conducting electricity through it) or is the penny switch off?

Conclusion: In the space below, describe the relationship between the number of coils in an electromagnet and the strength of the electromagnet. CHARGING AHEAD: AN INTRODUCTION TO ELECTROMAGNETISM 17 F i g u re 2 . 4 3 Construct an electromagnet that will consistently pick up at least three paper clips from a chain of paper clips on the tabletop. 4. Use the electromagnet to try to pick up at least three paper clips along the chain. Bulb in the circuit with the electromagnet a b 18 Describe below how the bulb in the circuit with the electromagnet influenced the strength of the electromagnet.

2 ■ For Part 2— the electric motor one electromagnet on its cup stand ■ all the above materials except one 15 cm wire and the bulb and its socket ■ additional materials as listed in the Teacher’s Guide, pages 38–39 Flopper magnet Flopper straw Washer Small loop of paper clip Large loop of paper clip Adjuster straw Fulcrum F i g u re 3 . 3 Rotor magnet Rotor Flopper magnet repelled downward Adjuster straw Washer Fulcrum CHARGING AHEAD: AN INTRODUCTION TO ELECTROMAGNETISM 29 4underMove the penny switch the back portion of the F i g u re 3 .

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Charging Ahead: An Itroduction to Electromagnetism (PB155X) by Larry E. Schafer


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