Question

Consider the following statements.
$1$. Ohm's law is not applicable at very low and very high temperature.
$2$. Ohm's law is applicable to semiconductor.
$3$. Ohm's law is not applicable to electron tubes, discharge tubes and electrolytes.
$4$. Conductance is the reciprocal of resistance and is measured in siemens.
Which of the statements given are correct?

• A. $1,2$ and $3$
• B. $1,2$ and $4$
• C. $1,3$ and $4$
• D. $1,2,3$ and $4$

Answer 1

The correct option is C $1,3$ and $4$

According to Ohm's law, the slope of V-I graph is a straight line as in the case of conductors. But in semiconductor, slope of V-I graph is not a straight line, rather it is curved implying that ohm's law is not applicable for semiconductor.
So, statement 2 is false but rest of the statements are true.