A current of i ampere flows along the inner conductor of a co-axial cable and returns through the outer conductor of the cable .If r_1 and r_2 are inner and outer radii of the cable, then the magnetic induction at a distance x meter form the cable will be :

A current of i ampere flows along the inner conductor of a co-axial ca

1.	A current of i ampere flows along the inner conductor of a co-axial cable and returns through the outer conductor of the cable .If r_1 and r_2 are inner and outer radii of the cable, then the magnetic induction at a distance x meter form the cable will be :
Answer» `(mu_@i)/(2R)` `(mu_@i)/(r_1+r_2)` zero infinity Answer :C

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A current of i ampere flows along the inner conductor of a co-axial cable and returns through the outer conductor of the cable .If r_1 and r_2 are inner and outer radii of the cable, then the magnetic induction at a distance x meter form the cable will be :

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