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Electromagnetic Induction — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Induction1 Mark
MCQ
Comment on the statement given below: In self$-$inductionWhen the current in a coil is increasing, induced emf opposes it
When the current in a coil is decreasing, induced emf supports it
  • ✓
    $A$ is true, $B$ is false
  • B
    $A$ and $B$ are false
  • C
    $A$ and $B$ are true
  • D
    $A$ is false, $B$ is true
✓

Answer

Correct option: A.
$A$ is true, $B$ is false
In self-induction,induced emf always opposes when the current in a coil is changing either increasing or decreasing.
So, $A$ is true, $B$ is false because when the current in a coil is increasing or decreasing, induced emf opposes it.

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