Magnetic Field and Magnetic Lines of Force

Magnetic lines of force around a bar magnet ____.

• travel from north to south inside the magnet

• travel from south to north outside the magnet

• travel from north to south outside the magnet

• are parallel to the placement of the magnet

A freely suspended magnetic needle points to the geographical north-south direction. Identify the device that works on this principle.

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Pick the correct statement(s) related to “magnetic lines of force”.

• They attract each other.

• They intersect each other.

• They are directed from the north pole to the south pole inside the magnet.

• They are directed from the south pole to the north pole inside the magnet.

The magnetic compass is placed in a/an _____.

• aluminum case

• gold case

• copper case

• iron case

A magnet in which the poles are close to each other is ____.

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Earth’s magnetic field is strongest at ____.

• the equator

• the poles

• the Tropic of Cancer.

• the Tropic of Capricorn

The strength of the magnetic field around a bar magnet ____

• increases with increase in distance from it.

• decreases with increase in distance from it.

• remains the same with increase in distance from it.

• first increases and then decreases with increase in distance from it.

The geographical north pole of the earth behaves like a _____.

• magnetic south pole

• magnetic north pole

• magnetic east pole

• magnetic west pole

____ is the area around a magnet where its influence can be detected.

• Magnetic lines of force

• Magnetic north pole

• Magnetic field

• Magnetic south pole

Match the following:

• {i-I, ii-II, iii-IV, iv-III}

• {i-III, ii- IV, iii-I, iv-II}

• {i-II, ii-I, iii-III, iv- IV}

• {i-III, ii-II, iii-I, iv-IV}