一个家用电熨斗的正常工作电流是1.5A,正常工作时,每分钟通过电熨斗的电荷量是______C.
t=1min=60s,Q=It=1.5A×60s=90C.
故答案:90C.
Thisschoolbag is notexpensive.Andtheprice ofit is the of the three.
A.lowest
B.biggest
C.highest
D.smallest
直流电动机工作在电动状态时电枢感应电动势为()
A.电源电动势
B.反电动势
C.输入相电压
D.输入线电压