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Question

Ohm's law does not apply to which of the following?

A
AC circuits
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B
Conductors
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C
Semiconductors
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D
None of these
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Solution

The correct option is C Semiconductors
All ac circuits and conductors obey Ohm's law suggesting current flowing through them is directly proportional to the voltage applied.
But semiconductors do not obey Ohm's law because I-V characteristics is a curved line instead of straight line.

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