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Describe the force between two charges which
is the source of all electric phenomena.
描述两个电荷之间的力，这是所有电现象的根源。
What do you mean by a conductor? and insulator?
What types of materials are conductors?
你所说的导体和绝缘体是什么意思？哪些材料是导体？
What causes and electric current (amperes) to
flow in a wire?
什么促使电流（安培）在导线中流动？
What are the parallels between water flow in
a pipe circuit and electric current flow in a DC
electric circuit?
水在管道中的流动与直流电路中电流的流动有哪些相似之处？
What is Ohm's law?
欧姆定律是什么？
How do you calculate electric current and power in an electric circuit?
如何计算电路中的电流和功率？
How is it that a bird can sit on a high voltage transmission
line and not be shocked?
高压输电线上为什么鸟可以坐上去而不被电击？
How does a Van de Graaff generator achieve such high
voltages?
范德格拉夫起电机是如何达到如此高电压的？
Why is it dangerous to stand under a tree during a
thunderstorm? Why is the lightning more likely to
strike the tree than flat earth?
为什么在雷雨天站在树下是危险的？为什么雷电更可能击中树而不是地面？
Why does the question "How much voltage does it take
to be a shock hazard?" not have a straightforward
answer? What is the best measure of the severity of
a shock?
为什么‘需要多大的电压才会成为触电危险’这个问题没有一个明确的答案？什么是最能衡量触电严重程度的指标？
How can you measure electric resistance
with a voltmeter and ammeter?
如何用电压表和电流表测量电阻？
Describe the basic layout of standard U.S. household
wiring systems. Why are there two high voltage or
"hot" wires?
描述标准美国家庭布线系统的基本布局。为什么会有两条高压或'火线'？
Why are standard U.S. receptacles "polarized" with
one wide prong and one narrow prong?
为什么标准的美国插座被称作‘极化’的，因为其中一个插脚较宽，另一个较窄？
What is the function of a fuse or circuit breaker?
保险丝或电路断路器的作用是什么？
What is the function of a ground wire?
接地线的作用是什么？
If the ground wire is broken, what indication of this
will you get from the operation of the appliance?
如果地线断开，你从电器的运行中会得到什么指示？
Is household wiring in series or parallel? Why?
家庭电路是串联还是并联？为什么？
Why is it that a small amount of corrosion on an auto
battery terminal can prevent the engine from starting?
为什么汽车电池接头上的少量腐蚀会阻止发动机启动？
If the auto won't start and you suspect the battery,
are the headlights and horn operation a good test of
the battery's strength?
如果汽车无法启动，你怀疑是电池问题， headlights 和喇叭的运作是否能作为电池性能的良好测试？
Why is it that a battery may test at normal voltage
even when it is too spent to supply appreciable
power to a circuit?
为什么电池在电量耗尽无法为电路提供显著功率时，仍可能显示正常的电压？
What is meant by a "short circuit"? an "open circuit"?
什么是‘短路’？什么是‘开路’？
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