Question

) Use Ampere's law for steady currents to 5+5

derive the magnetic field due to a solenoid.

Four very long straight wires are closely

bound together to form a small cable.

Currents carried by the wires are : I1=15A,

12 = -10A, 13 = 20A and 14 = - 5A.

-4

Determine B at a distance of 5 c

Answer 1

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