NAME: ____________________________________________
SECTION: __________________________________________
SCORE: ___________________
DATE: ____________________
ACTIVITY 3
FACTORS AFFECTING ELECTROMAGNET
I.
GEOMETRY OF THE WIRE
1. Draw the three geometry of the wire.
2. Draw the direction of magnetic field in each geometry of wire.
STRAIGHT WIRE
LOOP OF WIRE
COIL OF WIRE
Questions:
1. Which geometry of wire gives more magnetic field lines?
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2. Which geometry of wire exerts stronger magnetic force?
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II.
NUMBER OF TURNS OF WIRE
Questions:
1. Which number of turns shows greater deflection of the compass needle?
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2. What does this show?
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III.
AMOUNT OF CURRENT
Questions:
1. As we add more batteries to each set up, what happened to the deflection of the compass needle?
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2. What can we infer on this?
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IV.
PRESENCE OF IRON CORE
Questions:
1. Which set up shows greater deflection of compass needle? Coil without iron nail or coil with iron nail?
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2. What does this mean?
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V.
CONCLUSION
What are the three factors that affect the strength of an electromagnet and explain each?
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2._______________________________________________________________________________________
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3._______________________________________________________________________________________
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