A Van De Graaff generator is used to charge a metal sphere of 25-cm diameter metal that produces a voltage of 100 kV near its surface. If the resistance of human skin is 2000 Ohms, what current would flow through a person if they touched the sphere before it was grounded. Would this cause harm to a person touching it without protection? (Note: currents greater than 0.1 mA can be lethal.)

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