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1.which of these is a source of electrical energy?
A. switch B. battery C. light bulb
2.which of these controls the flow of electric current?
A. battery B. switch C. light bulb
3.when the switch is on the electric circuit is
A. open B. closed C. broken
4.which of the circuits will current flow?
A. open circuit B. short circuit C. closed circuit
5.which of the following measures can prevent fire caused by electricity?
A. touch a switch with dry hands.
B. avoid walking under low dangling wires.
C. have a regular inspection of electrical cords ​

1which Of These Is A Source Of Electrical Energy A Switch B Battery C Light Bulb 2which Of These Controls The Flow Of Electric Current A Battery B Switch C Ligh class=