Question

Ohm’s law is valid if

• A. $V$ is directly proportional to $I^3$
• B. the relation between $V$ and $I$ depends on the sign of $V$ for the same absolute value of $V$
• C. the relation between $V$ and $I$ is non-unique
• D. $V$ is directly proportional to $I^2$
• E. $V$ depends on $I$ linearly

Answer 1

Answer: (E)

According to Ohm’s law
$V\propto I$ or $V=RI$
where the constant of proportionality, $R$ is called the resistance of the conductor
From the above relation it is clear that Ohm’s law is valid if V depends on I linearly