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A lightning strike the average size has an energy that can power a 100 watt light bulb for more than 3 months. A bolt of lightning contains an average-sized electric power of 20,000 amps. A welding using 250-400 amps to weld steel. Moving speed of a lightning is 150,000 km / sec, or half the speed of light, and 100,000 times faster than voice
