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- Two parallel conducting plates, each of cross-sectional area 400 cm2, are 2.0 cm apart and uncharged. If 1.01012 electrons are transferred from one plate to the other, (a) what is the potential difference between the plates? (b) What is the potential difference between the positive plate and a point 1.25 cm from it that is between the plates?A research Vail de Graaff generator has a 2.00-m- diameter metal sphere with a charge of 5.00 mC on it. (a) What is the potential near its surface? (b) At what distance from its center is the potential 1.00 MV? (c) An oxygen atom with three missing electrons is released near the Van de Graaff generator. What is its energy in MeV when the atom is at the distance found in part b?(I) What potential difference is needed to stop an electronthat has an initial velocity v= 6.6 x 105 m/s ?
- Will the electric field strength between two parallel conducting plates exceed the breakdown strength for air (3.0 ✕ 106 V/m) if the plates are separated by 2.65 mm and a potential difference of 4.0 ✕ 103 V is applied? (b) How close together (in mm) can the plates be with this applied voltage? mmAn evacuated tube uses an accelerating voltage of 39 kV to accelerate electrons to hit a copper plate and produce X-rays. Non-relativistically, what would be the maximum speed (in m/s) of these electrons? m/s(I) What potential difference is needed to give a helium nucleus(Q=2e) 85.0 keV of kinetic energy?
- A cylindrical capacitor consists of a solid conducting cylinder with a radius of 0.260 cm and a coaxial conducting tube around it. There is air between the conductors and the length of the cylinder is 12.5 cm. If the capacity of the device is 38.5 pF; Part A: Calculate the inner radius of the outer tube.(r=?) Part B: What is the stored charge per unit length, λ when the shaver is loaded with 130 V? (λ=?)In a circuit powered by 9V source, the series combination of 5.0 F and 20.0 F capacitors is connected in parallel to a 40.0 F capacitor. 1.) What is the total charge stored in the combination of capacitors?2.) What is the potential difference across the 40.0 F capacitor?A 12.0 V battery-operated bottle warmer heats 50.0 g of glass, 2.50×102 g of baby formula, and 2.00×102 g of aluminum from 20.0ºC to 90.0ºC . (a) How much charge is moved by the battery?(b) How many electrons per second flow if it takes 5.00 min to warm the formula? (Hint: Assume that the specific heat of baby formula is about the same as the specific heat of water.)
- 73.0-m length of coaxial cable has an inner conductor that has a diameter of 2.58 mm and carries a charge of 8.10 µC. The surrounding conductor has an inner diameter of 7.27 mm and a charge of −8.10 µC. Assume the region between the conductors is air. (a) What is the capacitance of this cable?C = nF(b) What is the potential difference between the two conductors?ΔV = kVTwo parallel metal plates separated by 1.3 cm, with no material between the plates, are connected to the opposite terminals of a battery providing 5.0 kV potential difference. a) If an electron is placed just inside the negatively charged plate and allowed to travel (in vacuum) to the positive plate, what is its energy (in eV) upon impact with the positive plate? b) What is its energy in Joules? c) How fast is the electron moving when it hits the positive plate?(a) In electron-volts, how much work does an ideal battery with a 12.0 V emf do on an electron that passes through the battery from the positive to the negative terminal? (b) If 3.40 * 10^18 electrons pass through each second, what is the power of the battery in watts?