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Consider the following statements and select the correct option which correctly identifies true (T) and false (F). 

(i) Magnetic field lines do not intersect because they always travel parallel to each other in North to South direction. 

(ii) When a current flows through a straight copper conductor, it gets permanently magnetised. 

(iii) The strength of magnetic field at the centre of a circular coil is inversely proportional to the radius of coil.

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Correct option  (C)


(i)The magnetic field lines do not intersect, if they did, the direction of magnetic field would not be unique at the point of intersection. 

(ii) Copper conductor acts as a magnet as long as current flows through it. 

(iii) Magnetic field at the centre of circular coil is 

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