# In a simple resistor circuit, does the current reach V/R instantaneously?

Essentially, if I were to plot current against time for a simple circuit with a DC cell and a resistor in it, would there be a non-flat profile from time $$t = 0$$.

So, between $$t = 0$$ and $$t = t_1$$, where $$t_1$$ is the time at which the current in the circuit reaches a steady state of $$i = V/R$$, would $$\frac{\partial i}{\partial t} \neq 0$$

• Welcome to stack exchange! Whilst you have a valid point that there is a slight time delay due to the speed of transfer of energy, in reality it is a tiny tiny delay and would be quite hard to measure – Alex Robinson Oct 10 '19 at 15:47