如图甲所示是电阻R和小灯泡L的U﹣I图象,由图可知电阻R的阻值是 ____ Ω;若将电阻R与小灯泡L串联在电路中(如图乙),电流表示数为0.4A,则电源电压为 ____ V.
请你完成下列任务:
找出错误的地方并改正。
The old man as well as his children were excited .
____