일반물리학 2 · Current and Resistance · Problem 19
일반물리학 2 — Current and Resistance: Problem 19
19 A 60 W lightbulb is plugged into a standard 120 V outlet. (a) How much does it cost per 31-day month to leave the light turned on continuously? Assume electrical energy costs US$0.06/kW·h. (b) What is the resistance of the bulb? (c) What is the current in the bulb?
📖 풀이 보기
단계별 상세 풀이는 솔루션 패스가 필요합니다
풀이 보러가기 →
💡 각 챕터의 1~5번 문제는 로그인만으로 무료 열람 가능