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Worksheetselectromagnets
Total questions: 16
Worksheet time: 2hrs 22mins
A magnetic field is a force field created by
gravity
force
magnets
Arrows are close together on a force field when the force is
stronger
weaker
opposite
Earth has a magnetic field that is similar to a bar magnet's magnetic field.
true
false
Earth's magnetic South Pole is near Earth's geographic North Pole
true
false
Electronic devices create magnetic fields because they
are magnets
are compasses
have moving particles with electric charge
The electromagnetic forces from a current carrying wire are strong enough to move the compass needle. The forces can be made stronger by
making the wire shorter
making the wire longer
making the wire into loops
An electromagnet is a magnet that
its strength can be varied and turned on and off
always has a magnetic field around it
has very little strength
Refrigerator magnets and bar magnets are what type of magnet?
electromagnet
electronic
permanent
What THREE ways are electromagnets different from permanent magnets?
they can be turned off and on
they can increase in strength by increasing the current in the wire
they are smaller in size
they can change which is the north and south pole
How can you make an electromagnet?
Wrapping a large coil of wire around a permanent bar magnet
Letting a wire stick to the side of a bar magnet
Wrapping a large coil wire around a ferromagnetic material and connecting to a battery
What is the correct word of North pole and South pole?
North Santa Pole and South Santa Pole
North Hemisphere Pole and South Hemisphere Pole
North-seeking pole and South-seeking pole
All the Above
What happen if you bring a north pole and a south pole together?
The Repel
They Attract
The pull apart
None of the Above
