Two long straight parallel wires are 17 cm apart. Wire A carries 2.0 A current.

Question

Two long straight parallel wires are 17 cm apart. Wire A carries 2.0 A current.

Wire B's current is 4.2 A in the same direction.

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(a) Determine the magnetic field magnitude due to wire A at the position of wire B.
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(b) Determine the magnetic field magnitude due to wire B at the position of wire A.
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(c) Are these two magnetic fields equal and opposite?

Yes or No

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Why or why not? Please Explain

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(d) Determine the force magnitude per unit length on wire A due to wire B,

and the force magnitude per unit length on wire B due to wire A.

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Force on A due to B _________N/m

Force on B due to A_________N/m

(e) Are these two forces equal and opposite?

Yes or No

Why or why not? Please Explain

Explanation / Answer

a) ?Bdscos? =

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