The coil of an AC generator has 200 turns of the area 1 m2. If the coil rotates in a uniform magnetic field of 2 mT with a frequency of 200 Hz, Which of the following graphs shows the E.m.f induced in the coil from vertical position until 0.2s?! E(V) 7.90 在 3.95 0 0.1 0.2 0.3 0.4 EM 0.14 0.07 0 0.1 。 ♦t(s) 0.2 0.3 0.4t(s) N=200 A-1m2 B=2mT 去 E(V) 0.14 在 0.07 0 0.1 0.2 0.3 EM 7.93 3.95 0 >t(s) 0.1 0.2 0.3 0.4
The coil of an AC generator has 200 turns of the area 1 m2. If the coil rotates in a uniform magnetic field of 2 mT with a frequency of 200 Hz, Which of the following graphs shows the E.m.f induced in the coil from vertical position until 0.2s?! E(V) 7.90 在 3.95 0 0.1 0.2 0.3 0.4 EM 0.14 0.07 0 0.1 。 ♦t(s) 0.2 0.3 0.4t(s) N=200 A-1m2 B=2mT 去 E(V) 0.14 在 0.07 0 0.1 0.2 0.3 EM 7.93 3.95 0 >t(s) 0.1 0.2 0.3 0.4
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Transcribed Image Text:The coil of an AC generator has 200 turns of the area 1 m2. If the coil
rotates in a uniform magnetic field of 2 mT with a frequency of 200 Hz,
Which of the following graphs shows the E.m.f induced in the coil from
vertical position until 0.2s?!
7.90
E (V)
3.95
0.14
EM)
#
0.07
0 0.1 0.2 0.3 0.4
0
t(s)
0.1 0.2 0.3 0.4
Ć
N=200
A=1m2
B=2mT
2
E (V)
0.14
0.07
0
0.1 0.2
0.3
ε(ν)
7.93
#
3.95
0
t(s)
0.1 0.2 0.3 0.4
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