Fig 8.13 below shows the I-V characteristic curves for four resistors. Identify the ohmic and non-ohmic resistors. Give a reason for your answer.

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Solution

Ohmic: (d),

Non-Ohmic: (a), (b) and (c)

Only for (d) the I-V graph is a straight line or linear while for (a), (b) and (c), the graph is a curve

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Similar questions

Give two differences between an ohmic and non-ohmic resistor.

Statement 1: The V-I curve for an ohmic resistor is non-linear.

Statment 2: Ohm's law is not a universal law, the substances which obey ohm's law are ohmic substances.

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