Question

A series combination of $L$ and $R$ is connected to a battery of emf $E$, having a negligible internal resistance. The final value of current depends upon:

• A. $L$ and $R$ only
• B. $E$ and $L$ only
• C. $E$ and $R$ only
• D. $L$, $R$ and $E$ only

Answer 1

The correct option is C $E$ and $R$ only

So, initially current will be low and and it's magnitude increases with time as given in below formula
$i=\frac{E}{R}(1-e^{\frac{-Rt}{L}})$
So, after long time $t=\infty$ the exponential term will become zero
Hence $i=\frac{E}{R}(1-0)$
$i=E/R$
So, final value of current depends on $E$ and $R$.