A steady current is set up in a cubic network composed of wires of...

A steady current is set up in a cubic network composed of wires of equal resistance and length d as shown in figure. What is the magnetic field at the centre

\mathrm{P}

due to the cubic network A steady current is set up in a cubic network composed of wires of equal resistance and length d as shown in figure.

Options

A $\frac{\mu_{0}}{4 \pi} \frac{2 I}{d}$
B $\frac{\mu_{0}}{4 \pi} \frac{2$ \mathrm{I} $}{\sqrt{2} \mathrm{ d}}$
C0
D $\frac{\mu_{0}}{4 \pi} \frac{\theta \pi$ \mathrm{I} $}{\mathrm{d}}$

Correct answer

C. 0

Step-by-step solution

Bysymmetry, the magnetic field at the centre Pis zero.

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