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Q1. A power supply passing throughout a resistor is supposed to deliver 22-v DC at a max current of 150mA. The transformer's peak output voltage is appropriate to charge the capacitor to a full 22V, and the primary is supplied with 60-Hz AC. What value of capacitance will ensure that an output voltage stays within 3 percent of the rated 22v?
Q2. The parallel metal plate of a capacitor are separated by a distance of 0.5cm and are connected to a 90v battery.find an electric field between them and surface charge density on the plate.
The K-shell ionization energy of copper is 8979 eV. The L-shell ionization energy is 951 eV. Determine the wavelength of the Kα emission line of copper. What should be the minimum voltage be on an x-ray tube with a copper target in order to see the K..
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