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CBSE Notes 2011-2012 » XII-Physics

Magnetism

Steel is preferred for making permanent magnets whereas soft iron is preferred for making electromag...

Short answer question

Steel is preferred for making permanent
magnets whereas soft iron is preferred for
making electromagnets. Give one reason.
[AI 2006]

What is the value of the horizontal component of the earth's magnetic field at magnetic poles ? [AI ...

Short answer question

What is the value of the horizontal component
of the earth's magnetic field at magnetic poles ?
[AI 2005C]

Give two essential characteristics of a material used for preparing an electromagnet. [Foreign 2004]

Short answer question

Give two essential characteristics of a
material used for preparing an electromagnet.
[Foreign 2004]

How does the (i) pole strength and (ii) magnetic moment of each part of a bar magnet change if it is...

Short answer question

How does the (i) pole strength and
(ii) magnetic moment of each part of a bar
magnet change if it is cut into two equal
pieces transverse to its length ? [Delhi 2003]

How does the (i) pole strength and (ii) magnetic moment of each part of a bar magnet change if it is...

Short answer question

How does the (i) pole strength and (ii) magnetic
moment of each part of a bar magnet change if
it is cut into two equal pieces along its length ?
[Delhi 2003]

Where on the earth's surface is the value of angle of dip maximum ? [Delhi 2003]

Short answer question

Where on the earth's surface is the value of
angle of dip maximum ? [Delhi 2003]

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