A flat coil of wire consisting of 20 turns, each with an area of 10 cm, is positioned perpendicularly to a uniform magnetic field that varies with time according to B=2.5 f
A flat coil of wire consisting of 20 turns, each with an area of 10 cm, is positioned perpendicularly to a uniform magnetic field that varies with time according to B=2.5 f. where t is measured in s and B in T. If the coil has a total resistance of 0.10 9, what is the magnitude of the induced current at 0.8s?
a. 0.20 A b. 0.60 A c. 0.50 A d. 0.80 A e. None of the above
At what frequency should a 170-turn, flat coil of cross sectional area of 250 cm2 be rotated in a uniform 30-mT magnetic field to have a maximum value of the induced emf equal to 6.0 V?
a. 7.5 Hz b. 7.1 Hz c. 8.0 Hz d. 8.4 Hz e. None of the above
Homework Answers
in second problem magnetic
field is very low i.e 30 *10^-3 T . Hence the frequency required to
generate 6V is this much of high i.e f=47.0588 Hz .
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A flat coil of wire consisting of 20 turns, each with an area of 10 cm, is positioned perpendicularly to a uniform magnetic field that varies with time according to B=2.5 f
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