Question:

The direction of the induced e.m.f. is determined by

Updated On: Jul 7, 2022
  • Fleming's left hand rule
  • Fleming's right hand rule
  • Maxwell's right hand screw rule
  • Ampere's rule of swimming
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The Correct Option is B

Solution and Explanation

The direction of induced emf is determined by right hand rule. As per the the rule, if the thumb is pointed in the direction of motion of the conductor and the first finger is pointed in the direction of the magnetic field (north to south), then the second finger represents the direction of the induced current.
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Notes on Faradays laws of induction

Concepts Used:

Faradays Laws of Induction

There are two laws, given by Faraday which explain the phenomena of electromagnetic induction:

Faraday's First Law:

Whenever a conductor is placed in a varying magnetic field, an emf is induced. If the conductor circuit is closed, a current is induced, known as the induced current.

Faraday's Second Law:

The Emf induced inside a coil is equal to the rate of change of associated magnetic flux.

This law can be mathematically written as:

∈\(-N {\triangle \phi \over \triangle t}\)