[sabre2th1]

I got the wrong answer for part a) in the above question, don't know why though:

Terminal PD = EMF - lost volts

so therefore

Terminal PD = 6 - 0.4 = 5.6

Since V = IR, V/R = I

so 5.6/5.0 = I

I = 28/25 = 1.12 A (not rounded)

but the answer is I = 10/9 = 1.11 A

[Antimony]

E = IR + Ir
6 = I(5 + 0.4)
I = 10/9 A

"Terminal PD = 6 - 0.4 = 5.6"

That was wrong, you're subtracting the internal resistance from the emf, the "lost volts" is I*r not r

[sabre2th1]

(Original post by Antimony)
E = IR + Ir
6 = I(5 + 0.4)
I = 10/9 A

"Terminal PD = 6 - 0.4 = 5.6"

That was wrong, you're subtracting the internal resistance from the emf, the "lost volts" is I*r not r

Oh thank you !

For part b), I just find the PD like one would do normally right? (V=IR)

[Antimony]

Yep

[sabre2th1]

(Original post by Antimony)
Yep

thankss