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Direction of ?⃗: For each of the following find the direction of ?, ?? ?? ,...

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Physics

Direction of ?⃗: For each of the following find the direction of?, ?? ?? , and ?.

(a) An infinite sheet in the ?-? plane that has current density? = ?? Ì‚?. Find the directions of the fields:

i. above the sheet

ii. below the sheet

(b) A long solenoid that has a current that changes linearlyfrom ? = ??̂to ? = −??̂in some time ? . Find the directions of thefields:

i. inside the solenoid

ii. outside the solenoid

(c) A long thin wire along the ?-axis has a constant current ?Ì‚? running through it. The current is suddenly turned off such thatit decreases to zero in a short amount of time. (Assume thedecrease in current is linear). Find the directions of thefields:

i. before the current is turned off

ii. after the current has reached zero

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