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What is magnetic axis, magnetic meridian & magnetic equator.

Important Questions on Magnetism

MEDIUM

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

At certain place, horizontal component is

\frac{1}{\sqrt{3}}

times the vertical component. The angle of dip is

EASY

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

At a certain place, the horizontal component of earth's magnetic field is

\frac{1}{\sqrt{3}}

times the vertical component. The angle of dip at that place is

MEDIUM

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

A jet plane with a wing-span of

25 m

is travelling horizontally towards the east with a speed of

3600 km / hour

. If the Earth's magnetic field at the location is

4 \times 10^{- 4} T

and the angle of dip is

30 °

, then, the potential difference between the ends of the wing is

EASY

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

A Jet plane is travelling west at

450

metres per second. If the horizontal component of Earth's magnetic field is

4 \times 10^{- 4}

Tesla and angle of dip is

30 °,

Then the vertical component is

EASY

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

Magnetic lines form continuos closed loops. Why?

MEDIUM

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

The horizontal component of the earth's magnetic field is

3.6 \times 10^{- 5} t e s l a

where the dip angle is

60 °

. The magnitude of the earth's magnetic field is,

EASY

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

The strength of the Earth’s magnetic field is

MEDIUM

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

A magnetic compass needle oscillates

30

times per minute at a place where the dip is

45 °

and

40

times per minute where the dip is

30 °

. If

B_{1}

and

B_{2}

are the net magnetic fields due to the earth at the two places respectively, then the ratio

\frac{B_{1}}{B_{2}}

is approximately equal to

MEDIUM

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

θ_{1}

and

θ_{2}

be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip

θ

is given by

EASY

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

At a point

A

on the earth’s surface the angle of dip,

δ = + 25 °

. At a point

B

on the earth’s surface, the angle of dip,

δ = - 25 °

. We can interpret that:

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Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

Write the four important properties of the magnetic field lines due to a bar magnet.

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Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

Write three main characteristics of a magnet.

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Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

Write the four important properties of the magnetic field lines due to a bar magnet.

MEDIUM

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

How can you show that the magnetic strength of a magnet is concentrated at the poles?

MEDIUM

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

There are no markings on the body of a bar magnet to indicate its poles. How would you find its north pole?

MEDIUM

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

Shashi was rolling a bar magnet in fine sand. She pulled out magnet from the sand and noticed fine grey particles sticking on the ends of the magnet. However, no particles were sticking in the middle of the magnet. She wanted to know the basic facts clarified such observation with basic facts.

Answer the following questions based on above information:

Why are these fine particles sticking at the ends of the bar magnet but not in the middle of the magnet?

MEDIUM

Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

A bar magnet has no marking to indicate its poles. How will you find its poles, without using a magnet?

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Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

You are given a bar magnet with a length of string tied to it such that the magnet can hang from it. By just observing the magnet, how can you find out which end is the north pole? Explain your answer.

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Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

At which point on this diagram (labelled A to D) is the magnetic strength maximum?

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Physics>Electricity and Magnetism>Magnetism>Earth's Magnetism

You are given a magnet with no markings, indicating its pole. How can you identify its poles by using another bar magnet with markings?

What is magnetic axis, magnetic meridian & magnetic equator.

Important Questions on Magnetism

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