In Figure 2, two parallel-plates capacitors (A and B) are connected in parallel across a 240 V battery. Each plate has an area of 30 cm? and plates separation of 3.0 mm. Capacitor A is filled with air and capacitor B is filled with a dielectric of constantK=2.3. (a) Explain a significance of having a dielectric between plates of capacitor B, (b) Find the magnitude of electric field within capacitors A and B (c) Find the potential energy stored in each capacitor. (d) Find the charge stored in each capacitor.

(a) When a battery is connected to the plates of a 2.00-pF capacitor, it stores a charge of 36.0 uC. What is the voltage of the battery? V. (b) If the same capacitor is connected to another battery and 36.0 pC of charge is stored on the capacitor, what is the voltage of the battery? V. Need Help? Read It

The plates of a parallel-plate capacitor are charged to a potential difference of 35.0 V. If the capacitance is 49.0 µF, calculate the following. (a) the energy stored in the capacitor (b) the magnitude of charge stored on each plate of the capacitor

A parallel plate, air filled capacitor, has plates of area 0.55 m2 and a separation of 0.05 mm. What is its capacitance? (Units: nF=10-9F)

A parallel plate capacitor with plate separation do is charged by connecting it to a battery. The energy stored by the capacitor is Ug. The battery is then disconnected and the plate separation is changed to d1 = 0.7do. If U1 is the energy stored by the capacitor when the plate separation is di, what is the ratio U1/Uo? O (a) 0.7 O (b) 0.837 O (c) 0.49 O (d) 2.04 O (e) 1.43 O (f) 1.2

In the figure how much charge is stored on the parallel-plate capacitors by the 12.0 V battery? One is filled with air, and the other is filled with a dielectric for which κ = 2.10; both capacitors have a plate area of 4.70 × 10–3 m2 and a plate separation of 6.00 mm.

Two parallel-plate capacitors C, and C, are connected in parallel to a 12.0 V battery. Both capacitors have the same plate area of 4,10 cm? and plate separation of 2.65 mm. However, the first capacitor C, is filled with air, while the second capacitor C, is filled with a dielectric that has a dielectric constant of 4.00. (a) What is the charge stored on each capacitor? Q1 = pC Q2 = pC (b) What is the total charge stored on the parallel combination? PC Additional Materials

A parallel plate capacitor with air between its plates is charged to 86.6 V and then disconnected from the battery. When an unknown dielectric material is placed between the plates, the voltage across the capacitor drops to 21.519 V. What is the dielectric constant of the unknown material? Assume that the material fills the space between the plates completely. Round your answer to 2 decimal places.

A parallel plate capacitor has a capacitance of 5.5 µF when filled with a dielectric. The area of each plate is 2.0 m2 and the separation between the plates is 0.84E-5 m. What is the dielectric constant of the dielectric?

Consider a parallel plate capacitor having plates of area 1.4 cm2 that are separated by 0.018 mm of neoprene rubber. You may assume the rubber has a dielectric constant κ = 6.7. a) What is the capacitance in μF?  b) What charge, Q, in coulombs, does it hold when 9.00 V is applied to it?