A wire carries a current downward and is placed in a magnetic field that points directly out of the page. What is the direction of the magnetic force on the wire?a.To the rightb.To the leftc.Downwardd.Upward
Question
A wire carries a current downward and is placed in a magnetic field that points directly out of the page. What is the direction of the magnetic force on the wire?a.To the rightb.To the leftc.Downwardd.Upward
Solution
The direction of the magnetic force on a current-carrying wire placed in a magnetic field can be determined using Fleming's Left Hand Rule. According to this rule, if you stretch your thumb, forefinger, and middle finger of your left hand such that they are mutually perpendicular, then:
- The thumb points in the direction of motion or force (F).
- The forefinger points in the direction of the magnetic field (B).
- The middle finger points in the direction of the current (I).
In this case, the current is downward and the magnetic field is directly out of the page. If you align your left hand accordingly, your thumb (representing the force) will point to the right.
So, the direction of the magnetic force on the wire is to the right.
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