题目

           What is it that makes people happy? Youth, health, a good job, god looks, a flashy(浮华的) car? None of these things, Spanish experts say. The concept of happiness is coming under increasingly close examination in Spain. As the nation rises to the club of the world’s wealthiest countries, people are discovering that material things do not bring happiness. “Most people use money as a measure of human value,” says Jesus Ynfante, author of a book on Spain’s 300 Biggest Fortunes.  “Expensive products are regarded as the best. The rich are admired simply for b小刚用如图所示的电路测量额定电压为2.5V的小灯泡正常发光时的电阻(已知电源电压不变,但电压值未知)(1)连接好电路后,闭合开关,移动滑动变阻器滑片P,发现小灯泡始终不亮,电流表有示数,电压表的示数为零,则出现故障的原因可能是灯泡短路灯泡短路.(2)若图中的电压表已损坏,小刚找来一个已知阻值的定值电阻R0,找多一个电流表,从而又能测出小灯泡正常发光时的电阻,请在下面虚线框内画出实验电路图.
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