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A conducting wire is bent into a loop as...

A conducting wire is bent into a loop as shown in the figure. The segment AOB is parabolic given by the equation `y^(2) =2x` while segment BA is a straight line parallel to the y-axis. The magnetic field in the region is `vec(B) - 8 hat(k)` and the current in the wire is 2A.

Magnetic field at point D due to segment AO of the loop is directed parallel to

A

`hat(k)`

B

`-hat(k)`

C

`hat(i)`

D

`hat(j)`

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