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The graph in Fig, shows variation of tot...

The graph in Fig, shows variation of total energy U stored in the capacitor against the value of the capacitance C itself. Which of the two - the charge on capacitor or potential used to charge is kept constant for this graph ?

Text Solution

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It is known that energy stored in capacitor,
`U = (Q^(2))/(2C) = (1)/(2) CV^(2)`
If V were constant, `U prop C`. The graph between U and C should be a straight line, which is not. If Q is constant, `U prop (1)/(C )` ,
which is the kind of graph given.
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