he high-voltage power supply for a television’s picture tube has an open-circuit voltage of 18 kV and an internal resistance of 1.5 MΩ. (a) Find the voltage at the anode of the picture tube when the anode current is 800 μA. (b) What will the anode voltage be if the anode current is increased by 50%? (c) Find the short-circuit current of the power supply

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