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One thousand similar electrified raindro...

One thousand similar electrified raindrops merge into one so that their total charge remains unchanged Find the change in the total electric energy of the drops, assuming that the drops are spherical and that small drops are at large distance from one another [Energy increase by 100 times]

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1000 similar electrified rain drops merge together into one drop so that their total charge remains uncharged. How is the electric energy affected ?

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Knowledge Check

  • Of the total amount of energy that passes from one trophic level to another, about 10% is

    A
    respired and becomes heat
    B
    passed on as faeces or urine
    C
    stored as body tissue
    D
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  • One thousand small water drops of equal radii combine to form a big drop. The ratio of final surface energy to the total initial surface energy is

    A
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    B
    `1:1000`
    C
    `10:1`
    D
    `1:10`

  • 64 identical drops of mercury are charged simultaneously to the same potential of 10 volt. Assuming the drops to be spherical, if all the charged drops are made to combine to form one large drop, then its potential will be

    A
    100 units
    B
    320 units
    C
    640 units
    D
    160 units

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