MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Menu
Hinan Ali Grade: Upto college level
        

A bar magnet of magnetic moment 2A-m2 is kept such that its north pole faces the earth's geographical east and its west faces the geographical west. If the horizontal component of earth's magnetic field is 20 microtesla, find the position of neutral point.

7 years ago

Answers : (1)

Askiitians Expert Bharath-IITD
23 Points
										

Dear Hinan,


Bh= (μ0/4π)*M*(3cos2 θ -1)/l3



















 

 



 



B is the magnetic field, in teslas, at any point in space that isn't at the origin. It is equal to the sum of two field components,


BX the magnetic field component which is aligned with the x axis and


Br the magnetic field component which is in a radial direction.


x is the distance, on axis, from the dipole to the field measurement point, in meters.


l is the distance from the dipole to the field measurement point, in meters.


q is angle between the dipole axis, and the position vector of the field measurement point.



 


 




Given that horizontal component of the field is 20 micro tesla and we know the dip of the earths magnetic field as 11.50 thus tan 11.50 = Bearth horizontal/Bearth vertical



  • ð Bearth vertical = 98.303 micro tesla

  • ð And the neutral point will be observed on the axis of the dipole which implies θ = 0 and thus


20*10^-6 tesla =  10^-7 * 2*2/ l3



  • ð L = 0.271 m

  • Please feel free to post as many doubts on our discussion forum as you can. If you find any question
    Difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We
    are all IITians and here to help you in your IIT JEE preparation.


  • All the best  !!!


  • Regards,

  • Askiitians Experts

  • Adapa Bharath

7 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: R 2,600
  • View Details
  • Complete Physics Course - Class 11
  • OFFERED PRICE: R 2,800
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details