The magnetic induction at a point P which is at a distance of 4 cm from a long current carrying wire is 10^-3 T. The field of induction at a distance 12 cm from the current will be

(a) 3.33 × 10^-4 T

(b) 1.11 × 10^-4 T

(c) 3 × 10^-3 T

(d) 9 × 10^-3 T

Amit Saxena , 11 Years ago

Grade upto college level