Electromagnetic Forces

Interactive Video
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Engineering, Science, Physics
•
11th Grade - University
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What distinguishes electromagnetism from gravity in terms of charge interaction?
Gravity is stronger than electromagnetism at all scales.
Gravity can repel charges.
Electromagnetism only attracts charges.
Electromagnetism can both attract and repel charges.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can a magnetic field be generated using electric charges?
By moving charges through a wire.
By aligning charges in a straight line.
By placing charges in a vacuum.
By cooling charges to absolute zero.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an electromagnet?
A device that uses a moving charge to generate a magnetic field.
A permanent magnet that cannot be turned off.
A natural magnet found in the Earth's core.
A magnet that only works in space.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Coulomb's Law, what happens when two positive charges are near each other?
They have no interaction.
They form a magnetic field.
They repel each other.
They attract each other.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why don't humans fall through the Earth despite gravity?
Because humans are weightless.
Because the Earth is hollow.
Because gravity is weaker than electromagnetic forces at the human scale.
Because gravity only acts on non-living objects.
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