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Scottish Highers Electromagnetic Induction — practice questions

Explore 1 free Electromagnetic Induction questions in Scottish Highers Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Knock out the false induction claimsRead the answer and worked solution →

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Knock out the false induction claims

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Questions
  1. Question
    Three of these statements about inducing a current are false.
    Choices
    1. Item
      A magnet must move relative to the coil
      Correct
      Yes
    2. Explanation
      With no relative motion the flux never changes, so no emf appears.
      Item
      A still magnet in a coil induces one
    3. Explanation
      Lenz's law makes the induced current oppose the change, never help.
      Item
      Induced current adds to the flux change
    4. Explanation
      Changing the loop area or its angle induces a current just as well.
      Item
      Only a stronger magnet induces current
Instructions
Tap the three false statements about inducing a current to clear them from the board.
_Source: OpenStax Physics, Ch 20 Magnetism, section 20.3 Electromagnetic Induction_

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