Question

A coil of resistance R and inductance L is connected to a battery of emf E volt. The final current in the coil is

• A. $\frac{E}{R}$
• B. $\frac{E}{L}$
• C. $\sqrt{ \frac{ E}{ R^2 + L^2 } }$
• D. $\sqrt{ \frac{ EL}{ R^2 + L^2 } }$

Answer 1

Answer: (A)

$\frac{E}{R}$

Answer 2

Final current is constant and L plays no role at that instant.
Therefore, i = E / R.