Every question from past board papers on Energy stored in a capacitor, newest paper first. Open any question for its full worked answer.
A capacitor of capacitance C = 900 pF is charged fully by 100 V battery B as shown in figure (a). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance C = 900 pF as shown in figure (b). The electrostatic energy stored by the system (b) is :
A parallel plate capacitor has a uniform electric field '\(\vec{E}\)' in the space between the plates. If the distance between the plates is 'd' and the area of each plate is 'A', the energy stored in the capacitor is : (\(\varepsilon_0\) = permittivity of free space)
A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system :
A capacitor of \(2\ \mu F\) is charged as shown in the diagram. When the switch S is turned to position 2, the percentage of its stored energy dissipated is :
