1.Inaseriescircuit,whichvaluewillremainunchangedatallplacesinthecircuit.
A: Voltage
B: Current
C: Resistance
D: Inductance
A: Voltage
B: Current
C: Resistance
D: Inductance
举一反三
- The inductor voltage phase lags its current by 90 o, and the capacitor current lags its voltage by 90 o, is this conclusion true? [ ]. A: It's impossible. B: When the capacitance and inductance are nonlinear components. C: When inductance current and voltage, capacitance current and voltage are not related direction. D: Whenever.
- 2.Whichoftheelectricalpropertieslistedwillalwaysbethesameforeachcomponentinaparallelcircuit A: Impedance B: Current C: Resistance D: Voltage
- The unit of _____________ is the volt. A: current B: voltage C: resistance D: efficiency
- The resistance value is infinite, the current passing through the resistance is always zero, and the voltage depends on the external circuit, then it is called as the short circuit state.
- When replacing a power supply， what MUST the technician observe？（） A: voltage B: current C: wattage D: resistance