MyQuestionIcon

11

You visited us 11 times! Enjoying our articles? Unlock Full Access!

Earth's Magnetism

A magnetic ne...

Question

A magnetic needle free to rotate in a vertical plane, orients itself with its axis vertical at a certain place on the Earth. What is the value of Horizontal component of Earth's field?

A

1

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

B

0

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

C

90

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

D

infinite

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

Open in App

Solution

The correct option is A 0
Since the magnetic needle orients itself with its axis vertical, thus all the magnetic field must be in vertical direction and so horizontal component of earth's magnetic field must be zero.

Suggest Corrections

thumbs-up

0

Similar questions

Q. A magnetic needle free to rotate in a vertical plane, orients itself with its axis vertical at a certain place on the Earth. What is the value of Angle of dip at this place?

Q. (a) Small compass needle of magnetic moment 'm' is free to turn about an axis perpendicular to the direction of uniform magnetic field 'B'. The moment of inertia of the needle about the axis is 'I'. The needle is slightly disturbed from its stable position and then released. Prove that it executes simple harmonic motion. Hence deduce the expression for its time period.
(b) A compass needle , free to turn in a vertical plane orients itself with its axis vertical at a certain place on the earth. find out the values of (i) horizontal component of earth's magnetic field and (ii) angle of dip at the place.

Q. A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at

22^{0}

with the horizontal. The horizontal component of the earth's magnetic field at the place is known to be

0.35 G

. Determine the magnitude of the earth's magnetic field at the place.

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