Join Sarthaks eConnect Today - Largest Online Education Community!
0 votes
asked in JEE by (15 points)

Q 72 please......

Sarthaks Test For Class 7-12

1 Answer

0 votes
answered by (54.2k points)

Consider a circular loop of wire of radius r carrying current I. To calculate the magnetic field at the center O. The entire loop can be divided into a large number of small current elements.   

Consider a current element dl of the loop. According to Biot savart law, The magnetic files at the center O due to the element is 

The magnetic field due to all such current elements will point into the plane of paper at centre O. Hence the total magentic field at the centre O is 


Related questions

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

One Thought Forever

“There is a close connection between getting up in the world and getting up in the morning.“
– Anon