MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Earth's Magnetism

A large solen...

Question

A large solenoid of windings of 400 turns per meter carries a current 5A. The magnetic field at the centre of the solenoid is about:

A

1.2 mT

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

zero

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

5.0 mT

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

2.5 mT

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D 2.5 mT
The magnetic field at the centre of the solenoid $= μ n I = 4 π \times 10^{- 7} \times 400 \times 5 = 2.5 \times 10^{- 3} T$
Therefore, D is correct option.

Suggest Corrections

thumbs-up

0

Similar questions

Q. A long solenoid has

200

turns per cm and carries a current

i

. The magnetic field at its centre is

6.28 \times 10^{- 2} W b m^{- 2}

. Another solenoid has

100

c m

and it carries a current

\frac{i}{3}

. The value of the magnetic field at its centre :

100 cm

10

layers of winding of

200

turns each. If the current carries is

2 A

, then the magnetic field at the centre of the solenoid is nearly?

Q. The magnetic field intensity inside a long solenoid is 1 T. If the current per turn of the solenoid winding is 1A, find the number of turns in one meter.

Q. A solenoid has a core of a material with relative permeability

400

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

2 A

. If the number turns is

1000 p e r m e t e r

, calculate the intensity of magnetization.

Q. A long solenoid is fabricated to closely winding wire of radius

0.5

mm over a cylinderical frame, so that the successive turns nearly touch each other. The magnetic field at the centre of solenoid, if it carries a current of

5

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Earth’s Magnetism

PHYSICS

Watch in App

explore_more_icon

Explore more

Earth's Magnetism

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon