The magnetic induction at a point P which is at a distance 4cm from a long current carrying wire
is 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
Answers
Answered by
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It is 3.33* 10^-9 Tesla
B= uo/4pi * 2i/R
B2/B1 = R1/R2 = 0.04/0.12 = 1/3
B2 = 1/3 * 10^-8 = 3.33 * 10^-9 Tesla
TPS:
3.33*10^-9
It is 3.33 * 10^-7 Tesla only. U can solve n check it.
aaeesha, (10^-8)/3 is 3.33*10^-9
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