Question

what will be magnetic field produced the centre of current carrying if will be conducted value of current flowing a ) ratio of the coil b) number of the coil please answer

Answer 1

Given,

Initial current= x

Final current =2x

Initial radius = r

Final radius =1/2 r

Formula,

Initial Magnetic field = B1=permeability of free space x current/2 pi x radius

Let , B1= k × I/ r

Final magnetic field =B2=k×2 ×I/2×r

B2=k×I/r

B2=B1

Hence there is no change in magnetic field