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(Solved): The emf of a coil rotating in a magnetic field is zero at t=0, and the coil rotates at an angular v ...
The emf of a coil rotating in a magnetic field is zero at , and the coil rotates at an angular velocity of . At what time (in seconds) is the emf first at its most negative? Your answer should be a number with three decimal places, do not include the unit.
Expert Answer
The emf of the coil can be modeled by a sinusoidal function of time with an angular frequency of 9 radians per second. Let's assume that the function