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Questions
What do you understand by the term magnetic field lines?
What are magnetic field lines?
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Solution 1
A magnetic field line is a continuous curve in a magnetic field such that tangent at any point of it gives the direction of the magnetic field at that point.
Solution 2
Magnetic field lines are imaginary lines that indicate the direction and strength of the magnetic field around a magnet.
RELATED QUESTIONS
Fill in the following blank with suitable words:
The earth's magnetic field is rather like that of a .......... magnet with its .......... pole in the northern hemisphere.
The magnetic field lines produced by a bar magnet:
(a) originate from the south pole and end at its north pole
(b) originate from the north pole and end at its east pole
(c) originate from the north pole and end at its south pole
(d) originate from the south pole and end at its west pole
If you hold a coil of wire next to a magnet, no current will flow in the coil. What else is needed to induce a current?
What is an artificial magnet? State two reasons why do we need artificial magnets .
Explain the following :
Several soft iron pins can cling, one below the other, from the pole of a magnet.
Explain the method of plotting the magnetic field lines by using a small compass 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.
Define the agonic line.
State whether true or false. If false, correct the statement.
Magnetic field lines always repel each other and do not intersect.
