two electric bulb of 50 w and 100 w are given. which one will be brighter when they are connected in
I) series
II) parallel
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two electric bulb of 50 w and 100 w are given. which one will be brighter when they are connected in
I) series
II) parallel
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Answer:
series
Explanation:
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For a given rated voltage bulb,
The resistance of 50W rated bulb is much more than that of the 100W bulb.resistance is given by:
R=PV2
and the total current in the circuit in series is given by:
I=RSV
where RS=RA+RB
as the same current passes through each bulb when connected in series,50W bulb will glow brighter as power, P=I2R, is more in case of 50Wbulb.
similarly, when the bulbs are connected in parallel, 100W the bulb will be much brighter as power,P=RV2, is more in case of 100W bulb.