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1一.图、选中择电题阻R1、R2、R3的阻值相等,电池的内阻不计。开关K接通后流过R2的电流是K接通前的2A..1如/4图所示B,.12/、23分C.1/3D.1/2别为两电阻R1和R2的伏安特性曲线。若在两电阻两端加相同的电压,关于它们的电阻值及发热功率正确的是:A.电阻R1的阻值较大B.电阻R2的阻值?
1 A. Figure, select the optional resistance R1, R2, R3 equal resistance, the internal resistance of the battery does not count. The current flowing through R2 after switch K is turned on is 2A before K is turned on.. 1 As shown in /4 B, .12/, 23 points in C.1/3D.1/2 are two resistors R1 and R2 Volt-ampere characteristic curve. If the same voltage is applied across the two resistors, their resistance value and heating power are correct: A. The resistance of resistor R1 is larger B. The resistance of resistor R2?