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What is the electric field between the plates of a charged parallel plate capacitor with surface charge density on plates?
Important Questions on Electrostatic Potential and Capacitance
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Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
A parallel plate air capacitor has capacity , distance of separation between plates is and potential difference is applied between the plates. The force of attraction between the plates of the capacitor isHARD
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
A parallel plate capacitor is made of two square plates of side separated by a distance The lower triangular portion filled with a dielectric of dielectric constant as shown in the figure. Capacitance of this capacitor is:HARD
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
A parallel plate capacitor with air between the plates has a capacitance of . The separation between the plates is . The space between the plates is now filled with two dielectrics constant and thickness while the other one has dielectric constant and thickness . Capacitance of the capacitor is now MEDIUM
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
The electrostatic force between the metal plates of an isolated parallel plate capacitor having a charge and area , isMEDIUM
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
Voltage rating of a parallel plate capacitor is Its dielectric can withstand a maximum electric field of The plate area is . What is the dielectric constant if the capacitance is ?MEDIUM
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
The capacitance of a parallel plate capacitor becomes times its original value if a dielectric slab of thickness is inserted between the plates (where is the distance of separation between the plates). What is the dielectric constant of the slab?EASY
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
The capacitance of a parallel plate capacitor with air as medium is . With the introduction of a dielectric medium, the capacitance becomes . The permittivity of the medium is:HARD
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
The region between the parallel plates of a capacitor is filled with parallel layers of air and paper (of dielectric constant ). The space between the plates is and the thickness of paper is The ratio of the voltages across air and paper isHARD
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
Two identical parallel plate capacitors, of capacitance each, have plates of area separated by a distance . The space between the plates of the two capacitors, is filled with three dielectrics, of equal thickness and dielectric constants and . The first capacitor is filled as shown in figure and the second one is filled as shown in figure If these two modified capacitors are charged by the same potential , the ratio of the energy stored in the two, would be refers to capacitor and to capacitor ):
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Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
Two thin dielectric slabs of dielectric constants and are inserted between plates of a parallel plate capacitor, as shown in the figure. The variation of electric field ‘ ’ between the plates with distance ‘ ’ as measured from plate is correctly shown by:MEDIUM
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
An uncharged parallel plate capacitor filled with an oil is connected in parallel with an identical but air filled capacitor charged to a potential . If the common potential is , the dielectric constant of the oil isMEDIUM
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
Two parallel plate air capacitors of the same capacity are connected in series to a battery of emf . Then one of the capacitors is completely filled with the dielectric material of constant . The change in the effective capacitance of the series combination isHARD
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
The insulated plates of a charged parallel plate capacitor (with small separation between the plates) are approaching each other due to electrostatic attraction. Assuming no other force to be operative and no radiation taking place, which of the following graphs approximately shows the variation with time of the potential difference between the plates?MEDIUM
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
A parallel plate capacitor with square plates is filled with four dielectrics of dielectric constants arranged as shown in the figure. The effective dielectric constant will be:
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Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
A capacitor is kept connected to a battery and a dielectric slab is inserted between the plates. During the processMEDIUM
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
A parallel plated capacitor has area separated by dielectric slabs. Their relative permittivity is and thickness is respectively. The capacitance isEASY
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
A parallel plate capacitor has a capacity The separation between the plates is doubled and a dielectric medium is inserted between the plates. If the capacity is then the dielectric constant of the medium will beEASY
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
A capacitance of a parallel plate air capacitor is Dielectric constant of the medium to be introduced in between its plates to double its capacitance isMEDIUM
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
A parallel plate capacitor of capacitance is connected to a battery of EMF . If a dielectric material of dielectric constant is inserted between the plates, the magnitude of the induced charge will be:HARD
Physics>Electricity and Magnetism>Electrostatic Potential and Capacitance>Parallel and Spherical Plate Capacitor
A parallel-plate capacitor of area , plate separation and capacitance is filled with four dielectric materials having dielectric constants, , and as shown in the figure below. If a single dielectric material is to be used to have the same capacitance in this capacitor, then its dielectric constant is given by