What is the terminal voltage Vab in this circuit?

[Fatima Hasan]

Homework Statement

Homework Equations

V_ab =| Σ IR - Σ ε |

The Attempt at a Solution

V_ab = | - 0.2*2 - (-12) |
= 11.6 V
Can somebody check my answer please ?

 

[magoo]

Perfect!

 

[berkeman]

For me the question is a bit ambiguous, but if they are saying that the open-circuit battery voltage is 12.0V and the internal resistance is 0.2 Ohms, then your answer is correct, but you have labeled the current direction and voltage drop across the internal resistor backwards. The positive terminal of the battery is "a" on the left, and positive current flows out that end of the battery (so it returns into "b" from the outside direction, right-to-left).

 

[magoo]

Berkeman is indeed correct. I just looked at the values of voltage, current and resistance when I replied.