Thevenin Equivalent issue - I think I'm missing something

[Cazicami]

Homework Statement

Given the circuit (Attached in image) Find the thevenin equivalent circuit.

I know its a fairly simple thing, But I am not understanding where the lecturer is getting this answer from, unfortunately his solutions just state the voltage so I feel like I must be missing something important.

Homework Equations

V_th= (R₁/R_total)xV_total

The Attempt at a Solution

I tried finding the voltage dropped over the 10Ω + 5Ω resistors, which I found to be 4.3v

V_th= (R₁/R_total)xV_total = 4.3v
Where R₁ = 10Ω+5Ω
R_total=35Ω

But the lecturers solutions simply say V_th=2v

Any help is appreciated

 

[SammyS]

Homework Statement

Given the circuit (Attached in image) Find the thevenin equivalent circuit.

I know its a fairly simple thing, But I am not understanding where the lecturer is getting this answer from, unfortunately his solutions just state the voltage so I feel like I must be missing something important.

Homework Equations

V_th= (R₁/R_total)xV_total

The Attempt at a Solution

I tried finding the voltage dropped over the 10Ω + 5Ω resistors, which I found to be 4.3v

V_th= (R₁/R_total)xV_total = 4.3v
Where R₁ = 10Ω+5Ω
R_total=35Ω

But the lecturers solutions simply say V_th=2v

Any help is appreciated

What's the voltage across the output if there's no load? I.e., there is no current drop across the 10 kΩ resistor. You have a simple voltage divider with 20kΩ and 5kΩ .