wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The corecivity of a small magnet where the ferromagnet gets demagnetized is 3×103Am1. The current required to be passed in a solenoid of length 10cm and number of turns 100, so that the magnet gets demagnetized when inside the solenoid is:

A
3A
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
6A
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
30mA
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
60mA
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 3A
μoH=μoni
n=NL=1000.1
3×103=1000.1i
i=3A

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