Power supply, the conductor, the control device and ______ are four basic parts of an electric circuit
举一反三
- Electric power is an indispensable energy on board, so _____ plays a role in distribution, conversion and control of electric power on board. A: power supply unit B: distribution device C: power network D: load
- The power that an amplifier delivers to a load is equal to the difference between the power that the circuit draws from the power supply and the power that the circuit dissipates. ? 正确|错误
- The most common control device is the electric switch, the object _____ is to turn an electric current on or off by completing or breaking its circuit.
- Electric circuit is a combination of a conductor and of a source of e.m.f. which permits electrons to flow along a ______. A: stream B: wire C: terminal D: light
- When the series hybrid car is in the condition of starting, accelerating, or climbing, the engine, the generator and the battery together supply electric power to the electric motor．