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What determines the amount of potential
energy a charge possesses in the vicinity
of another charge?
在另一个电荷附近，决定电荷所具有的势能的是什么？
What is voltage?
什么是电压？
How do you calculate the voltage near a
point charge?
如何计算点电荷附近的电压？
What is the significance of the zero
point of voltage?
电压零点的意义是什么？
How is the voltage from a collection of
point charges calculated?
如何计算由一组点电荷组成的电压？
Describe the significance of an equipotential
surface. What can you say about the electric
field at such a surface?
描述等势面的意义。你可以说电场在这样的面上有什么特点？
Describe the potential of an electric dipole
描述电偶极子的电势
Calculate the voltage near a line charge.
... near a uniformly charged disc.
计算接近线电荷的电压...接近均匀带电盘的电压。
How do you calculate the electric field from
the voltage?
如何从电压计算电场？
Describe the voltage inside an isolated
charged conductor. Develop an expression
for the voltage of a charged conducting sphere.
描述孤立带电导体内部的电压。推导带电导体球的电压表达式。
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？
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