冬季，人们常有被莫名其妙“电”一下的怪现象，其实这是静电在作怪。 当静电电压达到2000伏特时，人的手指就会感觉出来；超过3000伏特时，手指尖会有刺痛感觉；超过7000伏特，便有触电的感觉。静电电压虽高，但它产生的电流很小，因此，一般不足以夺人性命。然而，由于静 Winter, people are often baffling “electricity” about the strange phenomenon, in fact, this is the static at play. When the electrostatic voltage reaches 2000 volts, the human finger will feel it; more than 3000 volts, the finger tip will have a tingling sensation; more than 7000 volts, there is the feeling of electric shock. Although the high electrostatic voltage, but it produces a small current, therefore, generally not enough to kill life. However, due to static