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## Homework Statement

suppose there is a inductor connected to a battery and resistor in series ...

i need to find the current in circuit at some time t

i suppose i could use Kirchhoff's loop law but i dont know weather to take potential across inductor (L di/dt) as positive or negative.

i suppose i should use it as negative because it is opposing the emf of battery but i am not sure

but this thing will not work in case of discharging LR circuit ... some help please ... ... ... ...