A. maximum motor force if the current reverses its direction
B. no motor force of it is parallel to the field
C. no motor force if it is perpendicular to the field
D. a motor force with constant direction if either the current or the magnetic field is reversed
Correct Answer:
Option B – no motor force of it is parallel to the field
Explanation
The greatest force is experienced when the conductor is at right angle to the field.
I.e at perpendicular or Ø = 90°
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