I have this question that I just can't figure out..
This is it:
"Consider two bulbs, X an Y, and a battery. The bulbs operate at the same voltage i.e. they light normally when each is connected to the battery. The bulbs are connected in series with the battery. Bulb X is brighter than bulb Y.
The bulbs are now connectred in parallel with the battery.
Which of the following statements is correct?:
A.) Both bulbs have the same brightness
B.) Bulb X is brighter
C.) Bulb Y is brighter
D.) Which bulb is brighter can't be determined without the battery voltage
E.) Which bulb is brighter can't be determined without knowing current"
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- 18-10-2016 22:54
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- 19-10-2016 20:31
Now think about the two bulbs in parallel. How does the voltage and current change get distributed among the two bulbs? Remember P = IV and use the resistance values of the two bulbs.Last edited by pleasedtobeatyou; 19-10-2016 at 20:34.