a tightly wound solenoid of radius a length l has n turns per unit length .it carries current i.
consider a length dx of solenoid at a dist x from one end this contains ndxturns and may be approximated as a current i n dx
write the mag field at the center of solenoid and integrate it under proper limits
a tightly wound solenoid of radius a length l has n turns per unit length .it carries current i.
consider a length dx of solenoid at a dist x from one end this contains ndxturns and may be approximated as a current i n dx
write the mag field at the center of solenoid and integrate it under proper limits