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What capacitor blocks either ac or dc?

Answer:

Always DC.

First answer by Nitinact. Last edit by Nitinact. Contributor trust: 7 [recommend contributor ]. Question popularity: 31 [recommend question].

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A capacitor blocks DC, while allowing AC to pass through it, because of its nature in resisting a change in voltage. The equation of a capacitor is ... dv/dt = i/c ... which means that the rate of...
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What is a AC DC Capacitor?
Electricity is either alternating current or direct current, abbreviated AC or DC. An AC/DC Capacitor can be used in either an AC or DC current.