Which of the following determines the direction of magnetic force experienced by a current-carrying conductor placed in a magnetic field?
Answer and explanation
Correct answer: B. Fleming's left-hand rule
- Step 1: Fleming's left-hand rule states: stretch thumb, forefinger, and middle finger mutually perpendicular.
- Step 2: Forefinger points in direction of magnetic field, middle finger in direction of current, and thumb gives the direction of mechanical force/motion.
Answer
Fleming's left-hand rule.
Why not the others: Fleming's right-hand rule gives direction of induced current in electromagnetic induction; right-hand thumb rule gives magnetic field line direction around a wire.
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