A technician reverses the direction of current in a conductor placed in a magnetic field. According to Fleming's Left Hand Rule, what will happen to the direction of force on the conductor?
The force direction will reverse
Fleming's Left Hand Rule: stretch the thumb, forefinger and middle finger of the left hand mutually perpendicular. The forefinger points along the magnetic field, the middle finger along the current, and the thumb gives the direction of the force on the conductor.
If the current is reversed while the field stays the same, the middle finger must point the opposite way, and the thumb then points in the opposite direction.
The magnitude of the force (F = BIL) is unchanged, since the field, current and length are the same; only its direction changes.
Hence, the answer is the force direction will reverse.
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Important Questions from Magnetism
What is the direction of magnetic field lines outside a magnet?
Which of the following statement is correct?
।. Magnetic field has both magnitude and direction.
II. The magnetic field inside a current-carrying straight long solenoid is the same at all points.
The magnetic effect of electric current was discovered by _____.
The important property of magnet which was exploited by navigators and travelers from the ancient times is:
The magnet used to lift and transport heavy loads like big metals, steel girders and scrap iron objects for loading and unloading purposes is known as____.
