In the wire shown in $($Figure $1)$ segment $BC$ is an arc of a circle with radius $30\mathrm{.}0$ cm $,$ and point $P$ is at the center of curvature of the arc. Segment $DA$ is an arc of a circle with radius $20\mathrm{.}0$ cm $,$ and point $P$ is at its center of curvature. Segments $CD$ and $AB$ are straight lines of length $10\mathrm{.}0$ cm each.

Figure

$1$ of $1$

Part A

Calculate the magnitude of the magnetic field at a point $P$ due to a current $11\mathrm{.}6$ A in the wire. Express your answer with the appropriate units.

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Part B

What is the direction of magnetic field?

into the page

out of the page

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