APSC Legal Metrology: Application of Ohm’s Law Paper 2

Consider the following statements regarding Ohm’s Law and its applications:

1. Ohm’s Law is universally applicable to all types of electrical circuits and materials.
2. Ohm’s Law is not valid for devices like diodes and transistors.

Which of the statements given above is/are correct?

A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2

Correct Answer: B

Explanation:

• Statement 1 is incorrect – Ohm’s Law is not valid for non-linear devices or in cases where temperature changes.
• Statement 2 is correct – diodes and transistors do not follow Ohm’s Law; their V-I characteristics are non-linear.

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