The figure shows a long cylinder and its cross section. There are N (N is a large number) wire on the curved surface of the cylinder at uniform spacing and paral- lel to its axis. Each wire has current I and cross sectional radius of wires are small compared to radius R of the cyl- inder. Find magnetic field at a distance x from the axis of the cylinder for (a) x < R (b) x > R R

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The figure shows a long cylinder and its cross
section. There are N (N is a large number) wire on the
curved surface of the cylinder at uniform spacing and paral-
lel to its axis. Each wire has current I and cross sectional
radius of wires are small compared to radius R of the cyl-
inder. Find magnetic field at a distance x from the axis of
the cylinder for
(a) x < R
(b) x > R
R
Transcribed Image Text:The figure shows a long cylinder and its cross section. There are N (N is a large number) wire on the curved surface of the cylinder at uniform spacing and paral- lel to its axis. Each wire has current I and cross sectional radius of wires are small compared to radius R of the cyl- inder. Find magnetic field at a distance x from the axis of the cylinder for (a) x < R (b) x > R R
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