Question: A 150-V resistor is connected to a variable-voltage power supply. (a) What voltage is necessary to cause a current of 0.3 A in the resistor?

A 150-V resistor is connected to a variable-voltage power supply.

(a) What voltage is necessary to cause a current of 0.3 A in the resistor?
(b) What current flows in the resistor when the voltage is 18 V?

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