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A) Suppose that a fixed voltage was used to send current through a resistor and the...

A) Suppose that a fixed voltage was used to send current through a resistor and the current is measured. Now the polarity of the source is reversed and the current is measured. How would this current compare with the former one?

B) Suppose that a fixed voltage source (voltage greater than the "knee" voltage) was used to send current through a diode in the forward direction and the current is measured. Now the polarity of the source is reversed and the current is measured. How would this current compare with the former one?

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