设电能表的转盘转过了75转消耗电能为W,则
3000:1=75:W
W=75×1/3000=0.025(KW.h)
0.025KW.h=90000(J)
答:略.
(1)设电能表的转盘转过了30转消耗电能为W,则
3000:1=30:W
W=30×1/3000=0.01KW.h=36000(J)
(2)因为,W=Pt,所以,P=W/t=36000/6=6000(W)
答:略.
设电能表的转盘转过了75转消耗电能为W,则
3000:1=75:W
W=75×1/3000=0.025(KW.h)
0.025KW.h=90000(J)
答:略.
(1)设电能表的转盘转过了30转消耗电能为W,则
3000:1=30:W
W=30×1/3000=0.01KW.h=36000(J)
(2)因为,W=Pt,所以,P=W/t=36000/6=6000(W)
答:略.