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WAEC - Physics (1992 - No. 51)

lf the frequency of the a.c. circuit illustrated is 500Hz/ π what would be the reactance in the circuit?
0.01Ω
190.91 Ω
200.00 Ω
795.46 Ω
1000.00Ω

Giải thích

C1 + C = 2 + 3 = 5μF
Capacitive reactance =
1/2πfc

X =
1/2π x 500 x 5 x 10-6
= 200

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