Two like magnetic poles of strength 10 and 40 S.I units are separated by a distance 30cm. The intensity of magnetic field is zero on the line joining them
see full answer
Your Exam Success, Personally Taken Care Of
1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
At a point 10cm from the stronger pole
b
At a point 20 cm form the stronger pole
c
At the midpoint
d
At infinity
answer is B.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
μo4π10x2=μo4π4030−x2 ⇒10x2=4030−x2 ⇒1x=230−x ⇒30−x=2x ⇒x=10 cm ∴from stronger pole distance is 20 cm