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- Thread starter shenjie
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current itself is the movement of electric charge so how come the movement of charge add up to zero?

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zero current is but one case of steady state current.

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Steady state here means that dI/dt, or the rate of change of current, is zero, meaning that I (current) is a constant.

Zz.

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When a sinusoidal current is applied to a circuit, a transient voltage and current is produced. This is followed by a "steady state" voltage and current. But neither voltage nor current is constant (including zero). They are steady in the sense that they behave in steady periodic form with steady amplitude and period.

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You appear to not understand the relationship between charge flow, and current.

I = dq/dt. If I is a constant (as in the

If this is related to school work, then (i) it should have been done in the HW/Coursework forum, and (ii) we've almost given you too much information.

Zz.

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