RC Circuits
In a series RC circuit, when the frequency and the resistance are halved, the impedance

is reduced to one-fourth
is halved
doubles
cannot be determined without values

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RC Circuits
Point +4 on the complex plane is

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

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