Physics

Problem

A device draws

0.6\,\text{A}

3\,\text{V}

and

1.2\,\text{A}

7\,\text{V}

. How should this device be classified? a) Ohmic, because the current nearly doubles when the voltage nearly doubles b) Non-ohmic, because current is inversely proportional to voltage c) Non-ohmic, because its resistance is different at the two voltages d) Ohmic, because the ratio

I/V

is almost constant for the two readings

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