题目内容
An inductor, also called a coil, chokes, or reactor, is a_______________ (passive or active) two-terminal electrical component that stores energy in a _____________field when electric current flows through it.
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An inductor has a _______________ _______________ to oppose current flow in an AC circuit.
A transformer has 1000 turns in primary side coil and 500 turns of secondary coil. Calculate the output voltage if the input voltage is 230V AC. Output voltage = _____________V AC (no decimal place)
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