아래 두문제
1번 V=12 (direct current 직류) v r= 1.2 kohms
current 10mA면 위험하다는데
2번 V=120 VAC (교류) R= 12k Ohms
어떻게 하는건가요 ? V=IR 쓰면 0.01 이렇게 나오는데 첫번째 질문은 안위험 하고 2번째 질문은 위험하다고 하는데 왜그런지 모르겠습니다.
1. A worker accidentally grabs both terminals of a 12 VDC car battery wire with wet hands.
Her resistance to the electricity is 1.2 KOhms. This is not considered a dangerous current.
Select one:
True
False
2. A worker accidentally touches a 120 VAC(voltage alternative current) wire with a wet finger.
His resistance to electricity is 12 KOhms. This is not considered a dangerous current.
Select one:
True
False
(격투기)
정통 돌려차기와 스포츠화 된 돌려차기의 차이
(31)
