An air-filled parallel-plate capacitor has plates of area 2.30 cm2 separated by 1.50 mm. The capacitor is connected to a 12.0-V battery. (a) Find the value of its capacitance. (b) What is the charge on the capacitor? (c) What is the magnitude of the uniform electric field between the plates?

A 1.8 mm by 2.6 mm plate capacitor has the plates separated by a distance of 0.12 mm. (a) When a charge 4.00 × 10 −11 C of charge is placed on the capacitor, what is the electric field between the plates? (b) If the electric field with the dielectric constant 130 is placed between the plates while the charges on the capacitor stays the same, what is the dielectric field in the dielectric

A slab of copper of thickness b = 1.68 mm is thrust into a parallel-plate capacitor of plate area A = 1.96 cm2 and plate separation d = 5.35 mm, as shown in the figure; the slab is exactly halfway between the plates. (a) What is the capacitance after the slab is introduced? (b) If a charge q = 2.68 µC is maintained on the plates, what is the ratio of the stored energy before to that after the slab is inserted? (c) How much work is done on the slab as it is inserted? (d) Is the slab sucked in or must it be pushed in? Copper (a) Number 4.73e-13 Units (b) Number i 0.686 (c) Number i 5.36e-10 Units J (d) sucked in

Consider a parallel-plate capacitor having an area of 2550 mm^2 and a plate separation of 4.9mm and with a material of dielectric constant 5.9 positioned between the plates. Also, the value of E0 is 8.85x10^-12F/m. a) What is the capacitance of this capacitor in pF? b) compute the electric field that must be applied for a charge pf 7.8x10^-8C to be stored on each plate in V/m.

A 5.30 cm by 2.40 cm parallel plate capacitor has the plates separated by a distance of 2.00 mm. When 4.00 × 10−11 C of charge is placed on this capacitor, what is the electric field between the plates?

The energy density in the region between the plates of a capacitor is 0.01 J/m^3. What is the magnitude of the electric fields between the plates? (E0=8.854 x 10^-12 C^2/Nm^2)