Creating a magnetic field using electricity is easy: an electric current flowing in a wire generates a magnetic field around that wire.

用电流产生磁场容易：当电流在金属线圈流动时，磁场也随之产生。

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You also see a graphs field which displays a list of graphs available with the current configuration.

您还会看到一个graphs字段，其中显示了可用于当前配置的图表列表。

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It contains 10 options, and each option contains the current value of the input field plus a number from zero to 9.

它包括了10个选项，每个选项包括了输入栏的当前值加上一个从0至9的数字。

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For example, one of the experiments we do is measure the magnetic field of current coil, and after we do the experiment, we all have a passive visualization that shows the same experimental set-up, except we add to that.

比如，我们做的一个实验就是,测量电线圈的磁场，在我们做完实验之后，我们都感受到了一个直观化的过程,它展现了同样的实验过程，只是那是我们加的。

麻省理工公开课 - 媒体、教育、市场课程节选

When something that conducts electricity sweeps through a magnetic field, a current starts to flow through it (this is the basis of a dynamo).

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Creating a magnetic field using electricity is easy: an electric current flowing in a wire generates a magnetic field around that wire.

ECONOMIST: Recreating the planet's magnetic field in a laboratory

They are working in a field and spot a niche that neither their current employer nor anyone else is filling.

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