capacitor of value C is connected across a battery of voltage V. The capacitor is fully charged. While the cap is still connected to the battery a dielectric of constant κis inserted. Find the new charge on the capacitor.
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capacitor of value C is connected across a battery of voltage V. The capacitor is fully charged. While the cap is still connected to the battery a dielectric of constant κis inserted. Find the new charge on the capacitor.
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- (a) When a battery is connected to the plates of a 4.00-pF capacitor, it stores a charge of 72.0 µC. What is the voitage of the battery? (b) If the same capacitor is connected to another battery and 36.0 µC of charge is stored on the capacitor, what is the voltage of the battery?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) When a battery is connected to the plates of a 5.00-µF capacitor, it stores a charge of 60.0 µC. What is the voltage of the battery? V (b) If the same capacitor is connected to another battery and 75.0 µC of charge is stored on the capacitor, what is the voltage of the battery? V Need Help? Read It
- An air filled capacitor C= 10uF is connected to a 15V battery. The capacitor is disconnected from the battery and the distance between the plates is doubled. What is the energy stored in the capacitor now?An initially uncharged air-filled capacitor is connected to a 3.29 V charging source. As a result, the capacitor acquires 9.89 x 10- C of charge. Then, while the capacitor remains connected to the charging source, a sheet of dielectric material is inserted between its plates, completely filling the space. The dielectric constant k of this substance is 7.61. Find the voltage V across the capacitor and the charge Qf stored by it after the dielectric is inserted and the circuit has returned to a steady state. V = V Qt = CIf a capacitor is connected to a battery, and allowed enough time to charge, the battery will maintain a constant voltage drop across the capacitor. This means that ∆V cannot change. It turns out that the effect on the capacitor due to inserting a dielectric is still the same; the capacitance increases by a factor of k. Since the voltage difference must stay the same, how can this happen? What must the battery do to create and maintain this voltage drop as the dielectric is inserted?
- Modern computer memories use parallel-plate capacitors to store information, and these capacitors are the basic elements of a random- access memory (RAM) chip. Assume one of these capacitors has plates with area L x L with L = 0.21 μm and a plate separation of 10 nm. The usual dielectric found between the plates is composed of SiO₂ and has a dielectric constant close to that of glass. What is the capacitance of the RAM capacitor when it is filled with SiO₂? FA 12 pF capacitor is connected to a 50 V battery. How much electrostatic energy is stored in the capacitor? If another capacitor of 6 pF is connected in series with it with the same battery connected across the combination, find the charge stored and potential difference across each capacitor.