Uses of Electromagnets MCQs Quiz Worksheet PDF Download

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Study elementary school courses, online science degree programs MCQs: good permanent magnet should produce a high magnetic field with a, for online courses with choices high mass, low mass, dense mass, and thick mass for daily quiz questions with online cognitive learning portal for students of class 7. Free science student portal for online learning uses of electromagnets quiz questions, MCQs to find questions answers based online learning tests.

MCQs on Uses of Electromagnets Quiz PDF Download

MCQ: A good permanent magnet should produce a high magnetic field with a

  1. high mass
  2. low mass
  3. dense mass
  4. thick mass


MCQ: If someone carrying a knife or gun passes through a detector, it alters rate of

  1. current
  2. voltage
  3. resistance
  4. magnetic field


MCQ: Another example of 'electromagnets' in trains is

  1. bullet train
  2. passenger train
  3. maglev train
  4. cargo train


MCQ: 'Earphones' are

  1. magnets
  2. small loudspeakers
  3. soft speakers
  4. magnetized speakers


MCQ: When small hammer is attracted by electromagnet, bell

  1. sparks
  2. vibrates
  3. stops
  4. strucks