Ohm's law is valid, when the temperature of the conductor is

Options

A. V is directly proportional to `I^(3)`
B. the relation between V and I is non-unique
C. V is directly proportional to `I^(2)`
D. V depends on I linearly

Answer

D

Explanation

According to Ohm.s law
`VpropI or V=RI`
where the constant of proportionally R is called the resistance of the conductor.
From the above relation it is clear that Ohm.s law law is valid if V depends on I linearly.