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प्रश्न
The magnetic field due to a long straight wire has been derived in terms of µ, i and d. Express this in terms of ε0, c, i and d.
उत्तर
The magnetic field due to a long, straight wire is given by
\[ \because \text{ Speed of light }, c = \frac{1}{\sqrt{\mu_o \epsilon_o}}\]
\[ \Rightarrow \mu_o = \frac{1}{c^2 \epsilon_o}\]
\[ \Rightarrow B = \frac{i}{2 \pi c^2 \epsilon_o d}\]
(In terms of ε0, c, i and d)
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