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Magnetic Fields Practice Test
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Q1
A long straight wire carries a steady current of $3.0\ \text{A}$ upward (along $+y$). Points $P$ and $Q$ are in the plane of the page, each $2.0\ \text{cm}$ from the wire, with $P$ to the right of the wire and $Q$ to the left. Which statement best describes the magnetic field direction at point $P$?
A long straight wire carries a steady current of $3.0\ \text{A}$ upward (along $+y$). Points $P$ and $Q$ are in the plane of the page, each $2.0\ \text{cm}$ from the wire, with $P$ to the right of the wire and $Q$ to the left. Which statement best describes the magnetic field direction at point $P$?