举一反三
- Ohm's Law is the algebraic relationship between voltage and current for a _______.
- 2.Whichoftheelectricalpropertieslistedwillalwaysbethesameforeachcomponentinaparallelcircuit A: Impedance B: Current C: Resistance D: Voltage
- 1.Inaseriescircuit,whichvaluewillremainunchangedatallplacesinthecircuit. A: Voltage B: Current C: Resistance D: Inductance
- The unit of _____________ is the volt. A: current B: voltage C: resistance D: efficiency
- With no resistance(电阻) in the circuit(电路) the current(电流) would increase forever.
内容
- 0
In a linear regulator, the purpose of using the power transistor is to ( ). A: Increase output voltage B: Increase output current
- 1
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.
- 2
When replacing a power supply, what MUST the technician observe?() A: voltage B: current C: wattage D: resistance
- 3
The voltage meter and current meter on the main switchboard shows ( <br/>). A: phase voltage and phase current of generator B: line voltage and line current of generator C: line voltage and line current of crane D: line voltage and line current of shore power
- 4
Digital multi-meter cannot measure ( ) when the measured circuit is working. A: voltage B: current C: resistance D: None of the above