A battery with an emf of 1.0 V is connected to a 1.0-kΩ resistor and a diode (a nonohmic device) as shown in part (a) of the figure. The current that flows through the diode for a given voltage drop is shown in part (b) of the figure.
(a) What is the current through the diode?
(b) What is the current through the battery?
(c) What is the total power dissipated in the diode and resistor?
(d) Suppose the battery emf were increased so that the power dissipated in the 1.0-kΩ resistor doubled.
Would you expect the power dissipated in the diode to double? If not, would it increase by a factor greater than 2 or less than 2? Explain briefly.

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1.0 V Diode 2 0 0.5 1.0 1.5