Questions
A cylindrical wire of radius R is carrying uniformly distributed current i over its cross-section. If a circular loop of radius r is taken as amperian loop, then the variation value of over this loop with radius ‘r” of loop will be best represented by
detailed solution
Correct option is A
If a wire carries current along positive x-axis, then the magnetic field due to it along the line y = x in first quadrant is upwards. If a wire carries current along positive y-axis, then the magnetic field due to it along the line y = x in first quadrant is downwards. Along the line y =xr, above two values of magnetic field are equal in magnitude but opposite in direction and thus, their resultant is zero.Similar Questions
Figure shows an Amperian path ABCDA. Part ABC is in vertical plane PSTU while part CDA is in horizontal plane POQRS. Direction of circulation along the path is shown by an arrow near point B and at D.
for this path according to Ampere’s law will be
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