Question

Identify the graph of ohmic resistors in the given figure:

• A.
• B.
• C.

Answer 1

The correct option is A

Ohmic resistors are those which have a constant resistance. Therefore, the graph that represents the ohmic resistors will be a straight line due to the constant slope:
$\text{Resistance}=\frac{\text{Potential difference}}{\text{Current}}$.
The other graphs represents a non-ohmic resistor (blue), and a superconductor (red).