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 ?

The graph in Fig, shows variation of total energy U stored in the capa

1.	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 ?
Answer» 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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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 ?

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