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Answer all questions Two parallel plates at -50kV and 100kV have separation 35cm. Calculate the following...
A parallel plate capacitor is made of plates of area 0.05 m? each. The plates are separated by a distance of 0.200 mm. Initially, the space between the plates is filled with air. (a) What is the capacitance of this air-filled capacitor? (b) If the electric field inside the capacitor exceeds 3.00 x 106 V/m, the air undergoes electrical break- down. (This maximum field is known as the dielectric strength of air.) From this, calculate the maxi- mum voltage (potential...
A parallel plate capacitor is constructed with circular plates of radius 0.750 cm and plate separation 0.0500 mm. If the capacitor is connected across a 37.2 V source, find: a) the capacitance b) the surface charge on each plate c) The energy stored in the capacitor d) the electric field between the plates e) the energy density between the plates
Consider an ideal parallel plate capacitor, having vacuum between two plates of area A and separation d. The shape of the plates is arbitrary. By the following steps, prove that the capacitance is 0 d where ε0 is the permittivity. Assume that the charge on each plate is electric field E between the plates is uniform. , and that the Use Gauss' law to calculate the electric field E between the plates in terms of Q and A. (Use a...
A parallel-plate capacitor has capacitance C0 = 7.00 pF when there is air between the plates. The separation between the plates is 1.10 mm. a. What is the maximum magnitude of charge Q that can be placed on each plate if the electric field in the region between the plates is not to exceed 3.00 x 104 V/m? b. A dielectric with K = 2.60 is inserted between the plates of the capacitor, completely filling the volume between the plates. Now...
Capacitor calculation a) Calculate the capacitance of a parallel-plate capacitor whose plates are made of two different sizes. One plate has a radius of 10 cm and the other plate has 12 cm and is separated by 0.75 mm air gap. b) What is the charge on each plate if a 12-V battery is connected across the two plates? c) What is the electric field between the plates? d) Estimate the area of the plates needed to achieve a capacitance...
Two rectangular parallel plates have area A and are separated by a distance d. They are connected to a power supply and charged with a voltage V. There no insulating material between them. In this configuration the plates make a capacitor with capacitance C. The electric field between the plates is E and the energy stored is U While still connected to the power supply, the plates are moved so the distance between them is one-half what it was. By...
A parallel-plate capacitor has capacitance 7.90 pF when there is air between the plates. The separation between the plates is 1.60 Part A What is the maximum magnitude of charge that can be placed on each plate if the electric field in the region between the plates is not to exceed 3.00x104 V/m? Express your answer with the appropriate units. HA Value Units
Suppose that, instead of forming a complete ring, the two ends of the wire are connected to the electrodes of a parallel-plate capacitor. The capacitor plates are circular with radius 1.0 cm and separation 1.0 mm. Again, the magnetic field strength is initially B 0.750 T and subsequently decreases in time at the constant rate -0.035 T/s (a) Sketch a charge diagram illustrating the final charge distribution on the capacitor plates When this final distribution is obtained, what is the...
The plates of a parallel plate capacitor are 4 cm wide and 7 cm long. The plates are separated by a 1.7-mm-thick layer of paper. a)Calculate the capacitance of the device (in pF) using the dielectric constant of paper b)Any dielectric material other than a vacuum has a maximum electric field that can be generated in the dielectric material before it physically or chemically breaks down and begins to conduct. This maximum electric field is called dielectric strength. The dielectric...
(a) State the units of electric potential and electric potential energy. Sketch an equipotential surface at a distance r from a point charge q and state the magnitude of the work done in moving a small test charge along that surface. [5 marks] (b) The figure below shows four representations (labelled A, B, C and D, respectively), of the electric field lines between the plates of a parallel plate capacitor. Identify which drawing is correct and indicate what is incorrect...