Question

A closely wound, circular coil with radius 2.80 cm has 740 turns. Part A What must...

A closely wound, circular coil with radius 2.80 cm has 740 turns.

Part A

What must the current in the coil be if the magnetic field at the center of the coil is 0.0770 T ?

Part B

At what distance x from the center of the coil, on the axis of the coil, is the magnetic field half its value at the center?

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