
Electromagnetism
Quiz by Zarrouq
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8 questions
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- Q1What rule is used to determine the direction of force on a current-carrying wire?Lorentz force ruleRight hand grip ruleRight hand ruleFleming’s left hand rule30s
- Q2What is the unit of magnetic flux density?NewtonTeslaAmpereWeber30s
- Q3According to Faraday's law, what induces electromotive force (emf) in a circuit?Temperature changeAmount of currentResistance levelRate of change of magnetic flux30s
- Q4What does Lenz’s law state about induced currents?It enhances the motion producing itIt has no effect on motionIt changes the direction of currentIt opposes the motion producing it30s
- Q5What is the formula relating the force on a charged particle moving in a magnetic field?F = BAF = mvF = BIlF = BQv30s
- Q6In the context of a cyclotron, what effect does the high-frequency alternating current have on charged particles?Changes their directionDecreases their energyIncreases their energyPrevents them from moving30s
- Q7What happens to the induced emf as the rate of rotation of a coil increases according to the text?It decreases the peak valueIt increases the peak value of the induced emfIt remains constantIt causes the emf to vanish30s
- Q8Which hand rule is used to determine the direction of induced current in a complete circuit?Fleming’s left hand ruleFleming’s right hand ruleLorentz force ruleRight hand grip rule30s