实验器材感应起电机一台,验电羽两个,金属网罩一个,导线三根.实验方法将一个验电羽放在金属网罩中间,另一个验电羽放在金属网罩外面,用导线将验电羽和金属网罩连接,金属网罩与感应起电机连接.转动感应起电机使金属网罩带电,此时可以看到金属网罩外面的验电羽散开,而金属网罩里面的验电羽完全没有反应.该现象说明电荷只分布在金属网罩的外表面,内表面不带电,金属网罩起到了屏蔽作用. Experimental equipment induction motor from a test power feather two, a metal mesh cover, wire 3. Experimental method will be a test feather in the metal mesh cover the middle of the other test feather placed outside the metal mesh cover with wire Will test the feather and the metal mesh cover connection, the metal mesh cover and the induction motor connected to the rotation induction motor so that the metal mesh cover charged, then you can see the metal mesh cover outside the electrical test feather scattered inside the metal mesh cover Of the test feather completely no response.The phenomenon shows that the charge is only distributed in the outer surface of the metal mesh cover, the inner surface is not charged, the metal mesh cover has played a shielding effect.