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  • Two long parallel wires situated at a distance 2a are carrying equal current 'i' in opposite directions as shown in the figure. The value of the magnetic field at a Point P situated at equa

Two long parallel wires situated at a distance 2a are carrying equal current 'i' in opposite directions as shown in the figure. The value of the magnetic field at a Point P situated at equal distances from both wires will be:

Option: 1

\frac{\mu_{0}ia}{\pi r}


Option: 2

\frac{\mu_{0}ia^{2}}{\pi r}


Option: 3

\frac{\mu_{0}ia^{2}}{\pi r^{2}}


Option: 4

\frac{\mu_{0}ia}{\pi r^{2}}


Answers (1)

best_answer

From the figure:

             B_{net} = 2B\sin \theta

                        = \frac{2\mu_{0}i}{2\pi r} * \frac{a}{r}

                        = \frac{\mu_{0}ia}{\pi r^{2}}

Posted by

HARSH KANKARIA

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