Assertion (A): In Fleming’s Left Hand Rule, the direction of magnetic field, force and current are mutually perpendicular.

Reason (R): Fleming’s Left hand Rule is applied to measure the induced current.

 

Answer:

flemings-left-hand-rule---teachoo.png

Fleming's left hand rule is used to find the direction of the force/ motion of a conductor.

Fleming's right-hand rule states that if we hold the forefinger, the middle finger and the thumb of our right hand at right angles to one another such that

  • Forefinger points in the direction of magnetic field
  • Thumb in the direction of the motion of conductor
  • Then the direction which the middle finger points gives the direction of the induced current.

Thus,

  • Assertion is true.
  • Reason is false.

So, the correct answer is (c)

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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo