Moving Charges and Magnetism

Question: The magnetic induction at a point P which is distant 4 cm from a long current carrying wire is ${10^{ - 8}}\,Tesla$. The field of induction at a distance 12 cm from the same current would be

1) $3.33 \times {10^{ - 9}}\,Tesla$

2) $1.11 \times {10^{ - 4}}\,Tesla$

3) $3 \times {10^{ - 3}}\,Tesla$

4) $9 \times {10^{ - 2}}\,Tesla$

Solution:

Explanation: No Explanation

Biot-Savart's Law Amperes Law

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