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U-Shaped Magnet

15.Consider a...

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15.Consider a co-axial cable which consists of an inner wire of radiussurrounded by an outer shell of inner and outer radiiandrespectively. The inner wire carries a currentand outer shell carries an equal and opposite current. The magnetic field at a distancefrom the axis where

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Q. Consider a co-axial cable which consists of an inner wire of radius a surrounded by an outer shell of inner and outer radii b and c respectively.The inner wire carries a current

l

and outer shell carries an equal and opposite current.The magnetic field at a distance x from the axis where b<x<c is :

Q. Consider a coaxial cable which consists of an inner wire of radius

a

surrounded by an outer shell of inner and outer radii

b

c

respectively. The inner wire carries an electric current

i_{0}

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(Assume current density to be uniform in the inner wire and outer shell.)

Q. Consider a coaxial cable which consists of an inner wire of radius

a

surrounded by an outer shell of inner and outer radii

b

c

respectively. The inner wire carries an electric current

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and the outer shell carries an equal current in the opposite direction as shown in the figure. The magnetic induction at a distance

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[Take permeability of the conductor as

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Q. A co-axial cable which carrying equal current

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Q. A hollow cylindrical wire carries a current

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2 R

respectively. Magnetic field at a point which

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distance away from its axis is

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