Electricity and Kirchhoff's Laws

Homework Statement

Given two batteries in parallel, one of 10V and 5Ω, and the other of 5V and 2Ω, which is attached to a 3Ω resistor, find the current that flows from the 10V battery, if the system described above is connected to a 20 resistor.

Homework Equations

Kirchhoff's two laws : (1) Current entering a junction = current leaving junction, (2) Algebraic sum of emfs = sum of all potential drops;

V = IR

The Attempt at a Solution

I think I used the laws correctly, and ended up with a final answer of 1.56 A. My attempt is attached below (the 2nd photo).

Thing is, I'm not sure if this is correct...

gneill
Mentor

Homework Statement

Given two batteries in parallel, one of 10V and 5Ω, and the other of 5V and 2Ω, which is attached to a 3Ω resistor, find the current that flows from the 10V battery, if the system described above is connected to a 20 resistor.

Homework Equations

Kirchhoff's two laws : (1) Current entering a junction = current leaving junction, (2) Algebraic sum of emfs = sum of all potential drops;

V = IR

The Attempt at a Solution

I think I used the laws correctly, and ended up with a final answer of 1.56 A. My attempt is attached below (the 2nd photo).

Thing is, I'm not sure if this is correct...