Question

How will the direction of force be changed, if the current is reversed in the conductor placed in a magnetic field ?

• A. No direction.
• B. Direction of force is reversed.
• C. Direction of force remains same.
• D. cant say

Answer 1

The correct option is B Direction of force is reversed.

According to Fleming's left Hand Rule rule, extend the thumb, forefinger, and the middle finger of the left hand in such a way that all the three are mutually perpendicular to each another. If the forefinger points in the direction of the magnetic field and the middle finger in the direction of the current, then, the thumb points in the direction of the force exerted on the conductor.So, if the current is reversed in the conductor placed in a magnetic field the direction of force is also reversed.