A straight wire 0.4 m long carries 5 A at right angles to a magnetic field of 0.6 T. What is the force on the wire?
Answer and explanation
Correct answer: A. 1.2 N
- Step 1: , and .
- Step 2: N.
Answer
1.2 N.
Why not the others: 3 N: the length of the wire was left out. 12 N: the decimal point is misplaced. 0.6 N: an extra factor of one half was used.
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