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此套题仅 p II含有简答题,
共计时45分钟,共3题
占总分50%
每道大题可能含有不同数量的小题
可以使用计算器
1)Physics students are analyzing the circuit above. A variable DC power supply is connected to an ammeter and three resistors. The resistances of two of the resistors are known to be
R2 = R3 = 50Ω, but the resistance of the third resistor is unknown. The students collect data on the potential difference across the power supply and the current measured by the ammeter, as follows.
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