Give one way you could increase the strength of the magnetic field created by this solenoid.
Increase the current / increase the number of turns / put an iron bar through the middle
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15
What will happen to the compass needles when a current flows through the wire?
The needles will line up with the magnetic field created by the current carrying wire
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15
Where is the strongest part of the magnetic field created by a bar magnet?
At the poles
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heart
Other team wins 25 points!
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gift
Win 20 points!
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Go to first place!
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thief
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boom
Lose 50 points!
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rocket
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shark
Other team loses 25 points!
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thief
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15
What does the Earth's magnetic field protect us from?
Solar winds
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15
What will happen to the compass needle if the bar magnet is rotated 180o?
The needle will point the other way
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15
Which pole of the Earth's magnetic field is at the "North Pole"?
The south pole
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star
Double points!
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gift
Win 25 points!
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baam
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15
Which pole is X?
North
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15
A superconductor is a material that when cooled will allow a massive amount of current to flow through it. Why does this MRI machine use superconducting wires for its electromagnet?
A very strong electromagnet requires massive amounts of current.
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15
What happens to the distance between magnetic field lines when the field gets stronger?
The field lines get closer together
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15
What will happen when the bell switch is closed?
The electromagnet will attracted the iron armature which will ring the bell
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15
A steel paper clip is brought into a magnetic field and attached to the end of a bar magnet. The paperclip now behaves as a magnet, what type of magnetism is this?
