RC Circuits
A 470 resistor and a 0.2 F capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is

2.12 mS + j3.14 mS
318.3
212
3.14 mS + j2.12 mS

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RC Circuits
Point +4 on the complex plane is

4 units left of the origin on the real axis
4 units right of the origin on the real axis
4 units above the origin on the j axis
4 units below the origin on the j axis

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