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What kind of magnet is this?
permanent magnet
Identify the phenomenon
Magnetic induction
How can the polarity of the electromagnet be reversed?
by reversing the direction of the current in is solenoid
Permanent magnet is made up of what substance?
Steel
I- shaped magnet is made of what substance?
Soft iron
What will happen to the compass needle if placed at the neutral point?
It will rest in any direction
The line joining the places where magnetic needle becomes horizontal, is termed as?
Magnetic equator
Two places where the magnetic needle becomes vertical is termed as?
Magnetic Poles
If an iron rod is buried inside the earth keeping it along the north-south direction. What will happen to the metal?
It will turn into a weak magnet, if the earth behaves as a magnet.
What direction does the tangent at any point on a field line give?
Direction of the magnetic field
Magnetic field lines are directed in which direction outside the magnet?
north pole to the south pole
Magnetism acquired by induction is purely _______________
Temporary