Question

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

• A. E/R
• B. E/L
• C. $\sqrt{\left[E/\right(R^2+L^2\left)\right]}$
• D. $\sqrt{\left[EL/\right(R^2+L^2\left)\right]}$

Answer 1

The correct option is A E/R

Eventually the inductor will not provide any hindrance to the current as it just tries to decrease the change in current. In steady state there is no change in the current and the circuit works as a simple DC circuit with only resistor. Thus, the final current is E/R