Capacitors

When a 4.7 F capacitor is connected to a 1 kHz source, what is its capacitive reactance?

A 4.7 ohms

B 29.5 ohms

C 34 ohms

D 213 ohms

ANS:C - 34 ohms

= 1/2 x 3.14 x 1000x4.7 x 10-6.
= 1/2 x 3.14 x 1 x 4.7 1 0-3.
= 1000/2 x 3.14 x 1 x 4.7.
= 1000/29.516.
= 34 ohms.

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