Three rings, each having equal radius $R,$ are placed mutually perpendicular to each other and each having its centre at the origin of co-ordinate system. If current $I$ is flowing thriugh each ring then the magnitude of the magnetic field at the common centre is
Three rings, each having equal radius $R,$ are placed mutually perpendicular to each other and each having its centre at the origin of co-ordinate system. If current $I$ is flowing thriugh each ring then the magnitude of the magnetic field at the common centre is
- A
$\sqrt 3 \frac{{{\mu _0}I}}{{2R}}$
- B
zero
- C
$\left( {\sqrt 2 - 1} \right)\frac{{{\mu _0}I}}{{2R}}$
- D
$\left( {\sqrt 3 - \sqrt 2 } \right)\frac{{{\mu _0}I}}{{2R}}$
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