题目内容
One milliampere is equivalent to one－thousandth(0.001)of an ampere，and one microampere is equivalent to one-billionth(0.000 000 001)of an ampere.
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The term voltage is commonly used to indicate a difference in potential bat electromotive force is not.
One kilovolt equals one thousand volts.
The opposition to current is called electrical resistance。
Larger amounts of resistance are commonly expressed in kiloohm (kΩ) and in megohm (MΩ).
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