A 12 pF capacitor is con much electrostatic energy is stored in the capacitor?

A capacitor stores potential energy PE when charged with a voltage of ΔV. If you double thevoltage, how much energy does the capacitor store?

A parallel-plate capacitor is charged using a 100 V battery; then the battery is removed. If a dielectric slab is slid between the plates, filling the space inside, the capacitor voltage drops to 30 V. What is the dielectric constant of the dielectric?

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A capacitor e stores 0.75J of its capacitance is 13 mF. What is your voltage?

Four parallel-plate capacitors all carry the same amount of charge on their plate. As can be seen in the figure, capacitors A and C have their plates separated by distance d, while B and D have twice the separation (2d). Capacitors C and D contain dielectrics with a dielectric constant of 5. Which option ranks the capacitors of increasing capacitance? vacuum B D AN ப் -2d- -2d- A, C, B, D A, B, C, D B, A, D, C D, C, B, A D, B, C, A dielectric (K = 5)

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#16 Does the charge that flows into the capacitor during the charging go all the way through the capacitor and back to the battery, or does it get stored somewhere in the capacitor?  a It goes all the way through the capacitor and back to the battery.  b It gets stored somewhere in the capacitor.

An air-filled parallel-plate capacitor has a capacitance of 2 pF. The plate separation is then halved and a wax dielectric is inserted, completely filling the space between the plates. As a result, the capacitance becomes 8 pF. The dielectric constant of the wax is:

Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an altitude of 590 m to be the other plate. Assume the surface area of the cloud to be the same as the area of a square that is 0.80 km on a side. (Dielectric strength of air is 3.0×106V/m) What is the capacitance of this capacitor? How much charge can the cloud hold before the dielectric strength of the air is exceeded and a spark (lightning) results?