Question

1. Write the properties of: a) Bar magnet. (b) Magnetic field lines.


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Answer 1

Answer:

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Explanation:

1.They are: Attractive Property – Magnet attracts ferromagnetic materials like iron, cobalt, and nickel. Repulsive Properties – Like magnetic poles repel each other and unlike magnetic poles attract each other. Directive Property – A freely suspended magnet always points in a north-south direction.

2.The field is tangent to the magnetic field line.

Answer 2

PROPERTIES OF MAGNETIC FIELDS OF LINES -

Magnetic field lines are imaginary lines that represent magnetic fields. It gives direction of magnetic force. An advantage of using magnetic field lines as a representation is that laws of magnetism and (electromagnetism) can be stated using concepts like 'number' of field lines through a surface.

Magnetic field lines are like streamlines in fluid flow, they represent something continuous, and a different resolution would show more or fewer lines. Various phenomena have the effect of displaying magnetic field lines as though the field lines were physical phenomena. For example, iron filings placed in a magnetic field, form lines that correspond to field lines. Field lines can be used as a qualitative tool to visualize magnetic forces.' Unlike' poles of magnets attract because they are linked by many field lines, 'like' poles repel because their field lines do not meet, but run parallel, pushing on each other.

PROPERTIES OF BAR MAGNET -

Attractive Property – Magnet attracts ferromagnetic materials like iron, cobalt, and nickel.

Repulsive Properties – Like magnetic poles repel each other and unlike magnetic poles attract each other.

Directive Property – A freely suspended magnet always points in a north-south direction.

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