ANSWER.
9. A
10. A
( when the switch is on, the circuit is closed but when the switch is turned off, the circuit is open because it's like cutted from a line.. )
11. D.
12. B.
( As you can see on that picture, the wire is not connected to the batter and made the bulb won't turn on )
13. B
14. A
15. B
( in my opinion, if the Christmas lights are used or connected to the series, there will be a possibility that the bulbs might break- )
hope it helps :'>
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Answers & Comments
ANSWER.
9. A
10. A
( when the switch is on, the circuit is closed but when the switch is turned off, the circuit is open because it's like cutted from a line.. )
11. D.
12. B.
( As you can see on that picture, the wire is not connected to the batter and made the bulb won't turn on )
13. B
14. A
15. B
( in my opinion, if the Christmas lights are used or connected to the series, there will be a possibility that the bulbs might break- )
hope it helps :'>