The energy density at a point in a medium of dielectric constant 6. is 26.55 x 106 J/m. Calculate electric field intensity at that point. (8o = 8.85 x 10 12 SI units)
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- Find the capacitance (in µF) of a parallel plate capacitor having plates of area 8.00 m2 that are separated by 0.300 mm of Teflon.a parallel-plate capacitor of plate area A = 11.5 cm2 and plate separation 2d= 7.40 mm. The left half of the gap is filled with material of dielectric constant κ1 = 22.8; the top of the right half is filled with material of dielectric constant κ2 = 41.3; the bottom of the right half is filled with material of dielectric constant κ3 = 60.4. What is the capacitance?On average, a bolt of lightning provides 500 megajoules [MJ of energy. Doctor Emmitt Brown's flux capacitor needs 1.21 gigawatts GW| of power to his DeLorean DMC-12 time machine. How long in units of seconds s must the lightning bolt be in contact with the car to completely charge the flux capacitor? Assume 100% of the energy from the lightning captured by the capacitor. >> Enter the numerical value in this box - do not include any units in this box >>
- A 37 uF capacitor is being charged by a voltage source and the energy stored is equal to 249.48 uJ. While the capacitor is still connected to the voltage source, a dielectric material is inserted between the plates. As a result, the energy stored increases by 347.73 uJ. The dielectric constant of this material is equal toA large capacitance of 1.15 mF is needed for a certain application.(a) Calculate the area the parallel plates of such a capacitor must have if they are separated by 4.98 µm of Teflon, which has a dielectric constant of 2.1.m^2 (b) What is the maximum voltage that can be applied if the dielectric strength for Teflon is60 ✕ 106 V/m V (c) Find the maximum charge that can be stored.C (d) Calculate the volume of Teflon alone in the capacitor.m^3How much work is required to put enough charge on the Reyenu Hall Van de Graff generator’s globe so that the field strength at the surface of the globe is at the threshold for dielectric breakdown? Treat the globe as an isolated sphere. the dimension of the Van de graph generator is radius 0.15m