The segment of wire shown in figure carr...

The segment of wire shown in figure carries a current of `i = 5.0 A` where the radius of the circular arc is `R = 3.0 cm`. Determine the magnitude and direction of the magnetic field at the origin.

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Magnetic field at `O` due to two straight wires` =0`
Magnetic field due to circular wire
`B=1/4` (due to whole circle)
`=1/4((mu_0i)/(2R))`
`=1/4((4pixx10^-7)(5))/(2xx0.03)` (inwards)
`=2.62xx10^-5T`

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