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smokey13
05.08.2019 •
Mathematics
A149-turn circular coil of radius 2.45 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. during 0.141 s the magnetic field strength increases from 50.9 mt to 98.1 mt. find the magnitude of the average emf, in millivolts, that is induced in the coil during this time interval.
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Ответ:
94.05 mV
Step-by-step explanation:
N = Number of turns = 149
r = Radius of coil = 2.45 cm = 0.0245 m
t = Time = 0.141 s
Initial magnetic field = 50.9 mT
Final magnetic field = 98.1 mT
A = Area = πr² = π×0.0245²
∴ Magnitude of the average EMF, that is induced in the coil during this time interval is 94.05 mV
Ответ: