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Electromagnetism

Quiz by Zarrouq

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8 questions
Show answers
  • Q1
    What rule is used to determine the direction of force on a current-carrying wire?
    Lorentz force rule
    Right hand grip rule
    Right hand rule
    Fleming’s left hand rule
    30s
  • Q2
    What is the unit of magnetic flux density?
    Newton
    Tesla
    Ampere
    Weber
    30s
  • Q3
    According to Faraday's law, what induces electromotive force (emf) in a circuit?
    Temperature change
    Amount of current
    Resistance level
    Rate of change of magnetic flux
    30s
  • Q4
    What does Lenz’s law state about induced currents?
    It enhances the motion producing it
    It has no effect on motion
    It changes the direction of current
    It opposes the motion producing it
    30s
  • Q5
    What is the formula relating the force on a charged particle moving in a magnetic field?
    F = BA
    F = mv
    F = BIl
    F = BQv
    30s
  • Q6
    In the context of a cyclotron, what effect does the high-frequency alternating current have on charged particles?
    Changes their direction
    Decreases their energy
    Increases their energy
    Prevents them from moving
    30s
  • Q7
    What happens to the induced emf as the rate of rotation of a coil increases according to the text?
    It decreases the peak value
    It increases the peak value of the induced emf
    It remains constant
    It causes the emf to vanish
    30s
  • Q8
    Which hand rule is used to determine the direction of induced current in a complete circuit?
    Fleming’s left hand rule
    Fleming’s right hand rule
    Lorentz force rule
    Right hand grip rule
    30s

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