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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



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


 


Grade:upto college level

1 Answers

Navjyot Kalra
askIITians Faculty 654 Points
7 years ago

(a)

 As the distance is increased to three times, the magnetic induction reduces to one third.

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