Magnetism and Electromagnetic Induction
Question 1 of 30
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A long straight wire produces magnetic flux density \(B\) at distance \(r\) when it carries current \(I\). The current becomes \(2I\) and the distance becomes \(3r\). What is the new magnetic flux density in terms of \(B\)?
Select one option.
A
\(2B\)
B
\(\frac{3}{2}B\)
C
\(\frac{1}{6}B\)
D
\(\frac{2}{3}B\)
E
\(3B\)
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