Find Thevenin's Voltage (VTH) Across Resistor R3 - Thevenin Theorem

[Loke]

Find the the equivalent Thevenin’s Voltage (V_TH) across resistor R₃ for the circuit.

-can anyone tell me what's your answer for the solution?
-if i want to use current divider rule...how am i going to solve it?

attempt solution:
Vth=VR3=R3/(R1+R3+R2)*V
= 8.33v

 

[n.karthick]

To find Thevenin voltage across R3, remove R3 from the circuit. Find current flowing in the circuit and from this find voltage drop across all resistors. Now find voltage difference across the points where R3 was present. That will give you the Thevenin voltage across R3.

 

[Loke]

Is my attempt solution correct? oh i know ady...thanks karthick...^^ my answer is wrong.Should be V=11.78v

 

[n.karthick]

Yes your answer is right, it is 11.7V

 

[paranormal]

To use the current divider rule, we need to first find the total current flowing through the circuit. This can be done by finding the equivalent resistance of the circuit using the parallel and series combination rules. Once we have the total current, we can use the current divider rule to find the current flowing through resistor R3. Then, using Ohm's law, we can find the voltage across resistor R3. This voltage will be the same as the Thevenin's voltage (Vth) across resistor R3.