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Explain the following :
The north end of a freely suspended magnetic needle gets attracted towards a piece of soft iron placed a little distance away from the needle.
Figure. shows a bar magnet placed on the table top with its north pole pointing towards south. The arrow shows the north-south direction. There are no other magnets or magnetic materials nearby.
What is the magnitude of the magnetic field at each neutral point? Give a reason for your answer.
In a uniform magnetic field, the field lines are:
Which substances are used for making electromagnets?
A charge of 5000 C flows through an electric circuit in 2 hours and 30 minutes. Calculate the magnitude of current in a circuit.
Select the correct option:
The magnetic strength of a bar magnet is:
Define the isoclinic line.
How do you account for the following fact?
Soft iron keepers help to prevent the magnets from losing their magnetic properties.
Magnetic field lines determine ______.
