A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 6

MEDIUM

12th West Bengal Board

IMPORTANT

Earn 100

A toroid of mean circumference of $0.5 m$ has $500$ turns, each bearing a current of $0.15 A$ . Find $B$ and the magnetisation $M$ , if the core is filled with iron of relative permeability $5000$ .

Important Questions on Magnetic Properties of Matter

MEDIUM

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 7

In a hydrogen atom, the electron moves in an orbit of radius

0.5 Å

making

10^{16}

rps. Calculate the magnetic moment associated with the orbital motion of electron.

HARD

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 8

The electron in the hydrogen atom is moving with a speed of

2.3 \times 10^{6} {ms}^{- 1}

in an orbit of radius

0.53 \overset{°}{A}

. Calculate the magnetic moment of the orbiting electron.

MEDIUM

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 9

A solenoid has a core of material with relative permeability

400

. The windings of the solenoid are insulated from the core and carry a current of

2 A

. If the number of turns is

1000

per meter calculate

H

.

HARD

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 9

A solenoid has a core of a material with relative permeability

400

. The windings of the solenoid are insulated from the core and carry a current of

2 A

. If the number of turns is

1000

per meter calculate

M

?

MEDIUM

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 9

A solenoid has a core of a material with relative permeability

400

. The windings of the solenoid are insulated from the core and carry a current of

2 A

. If the number of turns is

1000

per meter, calculate

B

HARD

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 9

A solenoid has a core of a material with relative permeability

400

. The windings of the solenoid are insulated from the core and carry a current of

2 A

. If the number of turns is

1000

per metre, calculate the magnetising current

I_{m} ?

HARD

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 10

A magnetising field of

1500 {Am}^{- 1}

produces a magnetic flux of

2.4 \times 10^{- 5} Wb

in a bar of iron of cross-section

0.2 \times 10^{- 4}

m^{2}

. Calculate the permeability and susceptibility of the bar.

MEDIUM

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 11

The magnetic field inside a long solenoid having

100

turns per

cm

is increased from

3.5 \times 10^{- 3} T

to

3.5 T

when an iron core of cross-sectional area

5 {cm}^{2}

is inserted into it. Find the current in the solenoid,