Question

O2i
4. Shown at right is a cross-sectional view of two long, straight wires
that are parallel to each other, placed near point P. One wire carries
a current i, into the page; the other wire is twice as far away from P
and carries a current 2i, out of the page.
(Hint: The magnetic field from a current-carrying wire is
proportional to the current through the wire and inversely
proportional to the distance away from the wire.)
Draw and label a vector on the diagram to show the direction of
the net magnetic field at point P. If the magnetic field is zero at
point P, state so explicitly. Explain your reasoning.
Р
i
a.
O= out of the page
= into the page

Answer 1

Answer:

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