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When a magnetic field is first turned on, the flux through a 20-turn loop varies with time according to Φm = 5.0t2 − 2.0t, where Φm is in milliwebers, t is in seconds, and the loop is in the plane of the page with the unit normal pointing outward. What is the emf induced in the loop as a function of time? −200t + 40 −400t + 20 −300t + 40 −100t + 80

When a magnetic field is first turned on, the flux through a 20-turn loop varies with time according to Φm = 5.0t2 − 2.0t, where Φm is in milliwebers, t is in seconds, and the loop is in the plane of the page with the unit normal pointing outward. What is the emf induced in the loop as a function of time? −200t + 40 −400t + 20 −300t + 40 −100t + 80

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When a magnetic field is first turned on, the flux through a 20-turn loop varies with time according to Φ m = 5.0 t 2 − 2.0 t , where Φ m is in milliwebers, t is in seconds, and the loop is in the plane of the page with the unit normal pointing outward. What is the emf induced in the loop as a function of time? − 200 t + 40 − 400 t + 20 − 300 t + 40 − 100 t + 80

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