Physics
Grade-10
Easy

Question

On which two sides of the electric motor couple forces are acting which cause the rectangular coil to rotate between the poles of the magnets?

  1. AB and BC
  2. BC and CD
  3. CD and DA
  4. AB and CD

hintHint:

AB and CD

The correct answer is: AB and CD


    Applying Fleming's right hand rule, the magnetic field in the coil AB and CD is at the right angles to the magnetic field of the magnet. Thus, a magnetic couple acts, which rotates the coil.

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