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AIIMS 2015
Exam
AIIMS
Year
2015
Subject
Physics
Chapter
Electromagnetic Induction

AIIMS 2015 · Physics · Electromagnetic Induction

Assertion : An emf is induced in a closed loop when magnetic flux...

Assertion : An emf ε\varepsilon is induced in a closed loop when magnetic flux is varied. The induced electric field EE is not a conservative field. Reason : The line integral ∮E⃗⋅dl→\oint \vec{E} \cdot \overrightarrow{d l} around the closed loop is non-zero.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIfboth assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

A. If both assertion and reason are true and reason is the correct explanation of assertion.

Step-by-step solution

We know \varepsilon=\oint E⃗⋅\vec{E} \cdot d l⃗=\vec{l}=-dϕBdt\frac{d \phi_B}{d t} As ∮E⃗⋅dl⃗≠0\oint \vec{E} \cdot d \vec{l} \neq 0, the induced electric field is non-conservative in nature.
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