A cell having N turns is would tightly in the form of a spiral with inner and outer radii ‘a’ and ‘b’ respectively. Find the magnetic field at centre, when a current I passes through coil:
A cell having N turns is would tightly in the form of a spiral with inner and outer radii ‘a’ and ‘b’ respectively. Find the magnetic field at centre, when a current I passes through coil:
Option 1 -
Option 2 -
Option 3 -
Option 4 -
-
1 Answer
-
Correct Option - 2
Detailed Solution:Let us consider an elementary ring of radius r and thickness dr in which current is flowing.
So, No. of turns in this elementary ring
Similar Questions for you
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 65k Colleges
- 1.2k Exams
- 688k Reviews
- 1800k Answers