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Questions and Answers
According to Faraday's law of electromagnetic induction, which of the following is true?
According to Faraday's law of electromagnetic induction, which of the following is true?
- The induced electromotive force in a circuit is inversely proportional to the magnetic field strength
- The induced electromotive force in a circuit is directly proportional to the rate of change of magnetic field strength (correct)
- The induced electromotive force in a circuit is directly proportional to the magnetic field strength
- The induced electromotive force in a circuit is inversely proportional to the rate of change of magnetic field strength
According to Lenz's law, which of the following is true?
According to Lenz's law, which of the following is true?
- The direction of the induced current in a circuit is determined by the resistance of the circuit
- The direction of the induced current in a circuit is random
- The direction of the induced current in a circuit is the same as the change in magnetic field that caused it
- The direction of the induced current in a circuit opposes the change in magnetic field that caused it (correct)
According to Maxwell's right hand grip rule, which of the following is true?
According to Maxwell's right hand grip rule, which of the following is true?
- The thumb represents the direction of the magnetic field, and the curled fingers represent the direction of the force experienced by a current-carrying conductor in that field
- The thumb represents the direction of the magnetic field around a straight current-carrying conductor, and the curled fingers represent the direction of the current in the conductor
- The thumb represents the direction of the force experienced by a current-carrying conductor in a magnetic field, and the curled fingers represent the direction of the magnetic field
- The thumb represents the direction of the current in a straight current-carrying conductor, and the curled fingers represent the direction of the magnetic field around the conductor (correct)