# The magnetic induction at a point P which is at a distance 4cm from a long current carrying wireis 10-8 tesla. The field of induction at a distance 12cm from the same current would be(A) 3.33 *10^9 tesla (B) 1.11*10^4 tesla(C) 3 *10^3 tesla (D) 9 *10^2 tesla

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