# Question

When a resistor is connected to a 12-V source, it draws a 185-mA current. The same resistor connected to a 90-V source draws a 1.25-A current.

(a) Is the resistor ohmic? Justify your answer mathematically.

(b) What is the rate of Joule heating in this resistor in both cases?

(a) Is the resistor ohmic? Justify your answer mathematically.

(b) What is the rate of Joule heating in this resistor in both cases?

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