A very long, straight horizontal wire carries a current such that $8\mathrm{.}151018$ electrons per second pass any given point going from west to east.

Part A

What is the magnitude of the magnetic field this wire produces at a point $4\mathrm{.}20$ cmcm directly above it$?$

Express your answer with the appropriate units.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

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SubmitRequest$$Answer

Part B

What is the direction of the magnetic field?

to the northto the eastto the southto the west