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but it seems correct

E-ir=IR

No, the answer is 1.38 A.

I know. That's what is confusing me. The formula is right, then why is the answer incorrect?

|dw:1398454706860:dw|
that's the ckt is'nt it

Here's the diagram that's given with the question.

Yes. O.o

I still don't get why the formula I used cannot be applied in this case. :/

Forward versus backwards is just a choice.

Right.

I thought 6.9V was the voltage drop in the internal resistance of the battery.

I think my concepts are all flawed.

Oh okay. So that means 2.1V is lost in the battery itself, right?

Right! 2.1V is what is lost in the battery.

Okay. Can you please explain what exactly is terminal p.d in context of such questions?

Yes, I get it now. xD Thank you so much.

What is the potential difference from one terminal to the other.
Cool! You're welcome :)

Okay, so here in this question is the terminal p.d 2.1V or 6.9V?

Okay, thank you. I'm sorry, I took so much of your time.

I have to go. Good timing :)
Take care! :)

Goodbye. You too. ^_^