在电阻串联电路中，如果某一个电阻开路，则（ ）In a series resistive circuit, if a resistance is open, ( )
A: 总电流为0 the total current is 0
B: 总电阻为∞，the total resistance is ∞
C: 开路处的电压等于电源电压the opened-resistor voltage is equal to the supply voltage
D: 开路处的电压等于0 the opened-resistor voltage is equal to 0
A: 总电流为0 the total current is 0
B: 总电阻为∞，the total resistance is ∞
C: 开路处的电压等于电源电压the opened-resistor voltage is equal to the supply voltage
D: 开路处的电压等于0 the opened-resistor voltage is equal to 0
举一反三
- When a BJT is in cutoff, the collector-to-emitter voltage is typically equal to _____ A: collector supply voltage B: collector current times collector resistor C: 0.3 Volts D: emitter voltage
- When a BJT is biased in the cutoff region the collector-to-emitter voltage is typically equal to （ ）. A: the emitter voltage B: the collector supply voltage C: 0.03 V D: the collector current times the collector resistor
- 电压包括开路电压、工作电压、额定电压、中点电压、充电电压等。其中开路电压(open circuit voltage) 是指（）
- 当电路的负载被断开时，称电路处于开路状态，此时负载电阻R为（ ），电路中的电流为（ ），电源的开路电压等于电源电动势。 A: ∞，0 B: ∞，∞ C: 0，∞ D: 0，0
- 电源开路时，电路中的=0（） A: 电动势 B: 电阻 C: 电压 D: 电流