A long straight wire carries a current of I 1 = 61Aalong the axis of a long sole

Question

A long straight wire carries a current of I1 = 61Aalong the axis of a long solenoid. This solenoid has a radiusof curvature of 60.3 cm with 490 turns/m and carries a current ofI2 = 1.99A in the same direction of the wire.
The permeability of free space is 1.25664 x10-6 T m / A
Find the combined field at a point 67 cm from the solenoid'saxis, perpendicular to the solenoids length, near the center of thesolenoids length. Answer in units of T.
The permeability of free space is 1.25664 x10-6 T m / A
Find the combined field at a point 67 cm from the solenoid'saxis, perpendicular to the solenoids length, near the center of thesolenoids length. Answer in units of T.

Explanation / Answer

as u must be knowing the solenoid produces a field along itsaxis only inside itself.therefore there is no field outside due tosolenoid. so we r left with a simple problem of finding field due to ainfinite wire field due to infinite wire= (/2pi)I/0.67=1.82 X 10-5

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