- การกดสวิตช์ เพื่อเปิดไฟ คือ การทำ

-Press the switch to turn on lights, closed-circuit is to make. There is electric current flow.-Press the switch to turn off power to the circuit open. There is no electricity flowing.-Fire fall is a phenomenon that power plants could not get enough power to use multiple appliances simultaneously with the electric current flowing into appliances and insufficient decrease in usage.

- Press the switch to turn on the circuit, is making. An electric current flows
- Press the switch to turn off the lights is to make an open circuit. No current flowing
- Fall is a rare plant can supply up enough to use multiple appliances pieces simultaneously affect the current flowing through the device and appliances fell inadequate. usability

- pressing the switch to turn on the lights. The closed circuit with electric flux
- pressing the switch to turn off the lights, the open circuit voltage, no electric current flows
.- power cut is the phenomenon of power plants can not pay enough energy only demand electric appliances many pieces at the same time, the current flowing through the equipment and appliances drop is not enough to use



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