1). Faraday\'s Law states that an induced emf if proportional to Choose one answ
ID: 2020095 • Letter: 1
Question
1).
Faraday's Law states that an induced emf if proportional to
Choose one answer.
A. the rate of change of the magnetic field
B. the rate of change of the induced magnetic field
C. the rate of change of the area of the enclosing current loop
D. the rate of change of the induced current
E. the rate of change of the induced electric field
F. the rate of change of the magnetic flux
2). A merry-go-round has an area of 233m2 and spins at 9 revolutions per minute about a vertical axis at a place where the Earth's magnetic field is vertical and has a magnitude of 8T. What is the resulting emf around the rim of the merry-go-round?
Enter V as your unit.
Explanation / Answer
Farady's law for electroamgnetic induction
thus, e = - dB / dt
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