Which of the following statement about magnetic lines of force is not correct?
A.
A magnetic line of force is an imaginary line which the north pole of a magnet would describe if it is free to move
B.
magnetic lines of force do not cross one another
C.
The presence of magnetic lines of force ina region indicates the presence of a manetic field
D.
magnetic lines of force are closely-packed together at neutral point
Answer: D
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