Physics, 27.11.2021 14:00 gabi83

trong trường hợp nếu có sự chạm đất với dòng điện chạm đất Id =100A ở nơi có điện trở suất của đất là p =1040hm. cm thì điện áp bước đặt vào người khi đứng cách chỗ chạm đất 2,2 m là bao nhiêu?biết a=(0,4-0,8)m

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trong trường hợp nếu có sự chạm đất với dòng điện chạm đất Id =100A ở nơi có điện trở suất của đất l...