This supplies 5 volts to pin 13. That creates a voltage difference across the pins of the LED, and lights it up.

这为13脚提供了5伏的电压，正是这个电压使LED灯亮。

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In the case of lead and lead dioxide, this potential difference is just over two volts per cell.

以铅和二氧化铅为例的电池，每节电池的电位差可产生2伏电压。

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The resistance of any length of a conducting wire is easily measured by finding the potential difference in volts between its ends when a known current is following.

已知导线中流过的电流，只要测出导线两端电位差的伏特值，就能很容易得出任何长度导线的电阻值。

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In the case of lead and lead dioxide, this potential difference is just over two volts per cell.

ECONOMIST: Einstein and car batteries

His study's design imitated Milgram's, even using the same scripts for the experimenter and suffering learner, but the key difference was that this experiment stopped at 150 volts -- when the learner starts asking to leave.

CNN: Charting the psychology of evil, decades after 'shock' experiment

The new results correlate well with Milgram's: 70 percent of the 40 participants were willing to continue after 150 volts, compared with 82.5 percent in Milgram's study -- a difference that is not statistically significant, Burger said.

CNN: Charting the psychology of evil, decades after 'shock' experiment