CapacitanceEasy
Question
A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved farther apart by by mean of insulating handles
Options
A.the charge on the capacitor increases
B.the voltage across the plates increases
C.the capacitance increases
D.the electrostatic energy stored in the capacitors increases
Solution
Charging battery is removed. Therefore, q = constant
Distance between the plates is increased. Therefore, C decreases.
Now, V =
, q is a constant and C is decreasing.
Therefore, V should increase.
, q is a constant and C is decreasing.
Therefore U should be increase.
Therefore, correct options are (b) and (d).
Distance between the plates is increased. Therefore, C decreases.
Now, V =
, q is a constant and C is decreasing. Therefore, V should increase.
, q is a constant and C is decreasing.Therefore U should be increase.
Therefore, correct options are (b) and (d).
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