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Lollipop1287
01.02.2022 •
Mathematics
A 12-V battery powers three lightbulbs in a series circuit. The voltage reading is 6 V across the first lightbulb and 3 V across the second lightbulb. What portion of the battery's energy transforms in the third lightbulb? Please show how you got the answer!
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Ответ:
Step-by-step explanation:
The voltage across the three bulbs would add up to
since the three bulbs are connected in serial.
The voltage across the third bulb would thus be:
.
Also because the three bulbs are connected in serial, the current going through each of them be the same as the size of the current of the whole circuit. Let
be the size of that current.
The power supplied by the battery would beThus, the portion of the power consumed by the third bulb would be
.
Ответ:
a=23
(12+a)+11=46
Step-by-step explanation: