Here's a shopping receipt(收据) of Linda.
Jiulong Great World
18 Huanghe North Road
Suqian City,223800
13/04/2012 15:17PM
Number Item(物品) Product# Price
1 Pair of trousers 3597981144 ¥ 150.00
3 Pairs of socks 8294653379 ¥ 10.00/each
1 Sweater 3607889911 ¥ 375.00
Total ¥ 555.00
WELCOME NEXT TIME!
根据以上内容,选择正确答案。
一个直流电动机,当它两端所加电压为3V,转子被抱死时,通过它的电流为3A;当它两端所加电压为8V,电动机正常工作时,通过电动机的电流为2A.由此可知电动机正常工作时( )