A) \[12\times {{10}^{-5}}\]
B) \[{{10}^{-5}}\]
C) \[5\times {{10}^{-5}}\]
D) \[7\times {{10}^{-5}}\]
Correct Answer: C
Solution :
[c] The magnetic field induction at centre O due to circular current, |
\[{{B}_{P}}\,=\frac{{{\mu }_{0}}}{2}\,\frac{{{l}_{2}}}{R}\,=\frac{4\pi \times {{10}^{-7}}\times 4}{2\times 0.02\,\pi }\,\] |
and magnetic field induction at the centre due to circular current , |
Net magnetic field induction it the centre due to both the circular currentsand |
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