If we cut a magnet near its middle, we find that: we don\'t find new magnets at
ID: 1573922 • Letter: I
Question
If we cut a magnet near its middle, we find that:
we don't find new magnets at all.
the N and S poles are separated.
we produce two new magnets (with their corresponding N and S poles)
None of the above
Biomagnetism is a kind of magnetism we find in certain minerals.
True
False
The instrument called "galvanometer" is used to:
detect electric fields
detect electric currents
detect magnetic fields
None of the above
The first artificial magnets were made by rubbing pieces of iron against lodestone.
True
False
we don't find new magnets at all.
the N and S poles are separated.
we produce two new magnets (with their corresponding N and S poles)
None of the above
Explanation / Answer
Ans.
1) If we cut a magnet near its middle we get two new magnets with their corresponding N and S poles.
2) Biomagnetism is a kind of magnetism found in living organisms. Hence it is false.
3) Galvanometer is used to measure electric current.
4) The first artificial magents were made by rubbing pieces of iron agains lodestone. It's true.
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