CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The length of a magnet is 16 cm. Its pole strength is 250 mAm When it is cut into four equal pieces parallel to its axis, the magnetic length, pole strength and moments of each piece are :


A
4 cm; 62.5 mAm; 250 mAcm2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
8 cm ; 500 mAm; 400 mAcm2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
16 cm; 250 mAm; 4000 mAcm2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
16 cm; 62.5 mAm; 0.01Am2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is B 16 cm; 62.5 mAm; 0.01Am2
On cutting the magnet parallel to its axis, the magnetic length remains same.
Pole strength decreases by a factor of 4 as it is divided into four parts
mfinal=250/4=62.5 mAm.
Mfinal=mL=16×102×62.5×103=0.01 Am2

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon