only quality answers needed \maltese[tex]\bold{Question }[/tex] Two bulbs 200 W and 100 W are c

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only quality answers needed
\maltese[tex]\bold{Question    }[/tex] 

Two bulbs 200 W and 100 W are connected across 220 V supply in series. Find the power
consumed by both bulbs.​

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Khải Quang 5 years 2021-08-03T15:00:13+00:00 1 Answers 13 views 0

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  1. kiet
    0
    2021-08-03T15:01:43+00:00
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    Answer:

    The power consumed by both bulbs is 67 watts.

    Explanation:

    Two bulbs are 200 W and 100 W

    The two bulbs of 200 W and 100 W are working at 220 V.

    Two bulbs are connected to : 200 V supply in series

    Power consumed by both the bulb = ??

    {\boxed{\sf{P_s =\dfrac{P_1 P_2}{P_1 + P_2}}}}

    \sf{P_{1}}=200 W

    \sf{P_{2}}= 100 W

    \longrightarrow{\sf{P_s = \dfrac{200 \times 100}{200+ 100}}}

    \longrightarrow{\sf{P_s = \dfrac{20000}{200+ 100}}}

    \longrightarrow{\sf{P_s = \dfrac{20000}{300}}}

    \longrightarrow{\sf{P_s = \dfrac{200}{3}}}

    \dashrightarrow{\sf{P_s \approx \: 67 \: watt}}

    Power consumed ≈ 67 watt

    Therefore, the power consumed by both bulbs is 67 watts.

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