Deflecting a compass needle When you bring a current-carrying wire down onto the
ID: 1324595 • Letter: D
Question
Deflecting a compass needle
When you bring a current-carrying wire down onto the top of a compass, aligned with the original direction of the needle and 4 mm above the needle, the needle deflects by ? = 5 degrees (see the figure).
(a) Which of the following statements are correct? Select all that apply.
Electron current in the wire is flowing upward (North).
The magnetic field under the wire, due to the current, points to the West.
Conventional current in the wire flows upward (North).
Conventional current in the wire is flowing downward (South).
The magnetic field under the wire, due to the current, points North.
The magnetic field under the wire, due to the current, points to the East.
Deflecting a compass needle When you bring a current-carrying wire down onto the top of a compass, aligned with the original direction of the needle and 4 mm above the needle, the needle deflects by ? = 5 degrees (see the figure). 2 ? 10^-5 tesla. A (a) Which of the following statements are correct? Select all that apply. Electron current in the wire is flowing upward (North). The magnetic field under the wire, due to the current, points to the West. Conventional current in the wire flows upward (North). Conventional current in the wire is flowing downward (South). The magnetic field under the wire, due to the current, points North. The magnetic field under the wire, due to the current, points to the East. (b) Calculate the amount of conventional current flowing in the wire. The measurement was made at a location where the horizontal component of the Earth's magnetic field is BEarthExplanation / Answer
these statements are true. Supposing your needle deflected to the east they should be the same for you!
Electron current in the wire is flowing upward (North).
Conventional current in the wire is flowing downward (South).
The magnetic field under the wire, due to the current, points to the East.
b). 112 A
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