Magnetism and Electromagnetism
What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?

22 x 10"8 N
22 x 10"5 N
22 x 10"7 N
22 x 10-6 N

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Magnetism and Electromagnetism
When an iron piece is placed in a magnetic field

the magnetic field will not be affected
the iron piece will break
the magnetic lines of force will bend away from their usual paths in order to go away from the piece
the magnetic lines of force will bend away from their usual paths in order to pass through the piece

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