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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.

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