试题与答案

2010年诺贝尔物理学奖授予英国曼彻斯特大学科学家安德烈·海姆和康斯坦丁·诺沃肖

题型:实验题

题目:

2010年诺贝尔物理学奖授予英国曼彻斯特大学科学家安德烈·海姆和康斯坦丁·诺沃肖洛夫,以表彰他们 对石墨烯的研究。他们最初是用透明胶带从石墨晶体上“粘”出一片石墨烯的。我们平常所用的铅笔芯中就含有石墨,能导电。某同学设计了探究铅笔芯伏安特性曲线的实验,得到如下数据(I和U分别表示通过铅笔芯的电流和其两端的电压):

实验室提供如下器材:

A.电流表A1(量程0.6 A,内阻约为1.0 kΩ)

B.电流表A2(量程3A,内阻约为0.1 Ω)

C.电压表V1(量程3V,内阻3 kΩ)

D.电压表V2(量程15 V,内阻15 kΩ)

E.滑动变阻器R1(阻值0~10 Ω,额定电流2A)

F.滑动变阻器R2(阻值0~2 kΩ,额定电流0.5 A)

(1)除长约14 cm的中华绘图2B铅笔芯、稳压直流电源E(6 V)、开关和带夹子的导线若干外,还需选用的其他器材有____(填选项前字母);

(2)在虚线方框中画出实验电路图;

(3)根据表格中数据在坐标纸上画出铅笔芯的I-U图线。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:眼在不用调节时最远能看清之点称为远点。

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