# How to find current through the 5 Ω resistor using Thevenin's theorem?

I tried to take the 5 Ω resistor as Rl but still couldn't find the answers as given in the green highlight. I'm pretty new at this and can only manage solving straightforward circuits.

I managed to reduce the circuit and obtain the Rth value, but don't know which node to take in order to find Vth. I am also confused about which portion of the circuit doesn't have a voltage drop, I presume it's the 100 V and 10 Ω resistor.

• Please edit your question to show the equations you've written. This will allow us to show you where you mistake is, and otherwise your question is considered off-topic for lack of (apparent) effort.
– Null
Jan 4, 2022 at 17:47
• Edit: I managed to reduce the circuit  - did you reduce the circuit following the hints in my answer? Jan 4, 2022 at 18:20
• no i just saw it now, i have a question though, i understand the resistors but could u explain why does the 50 v turn into 20v ? Jan 4, 2022 at 18:21
• That's fundamental when converting a voltage source that has both series resistance and parallel resistance. It forms a potential divider and the open circuit Thevenin voltage is 20 volts. Your picture is wrong in this one respect. However, it doesn't affect your evaluation of the Thevenin resistance because voltage sources are set to zero. Jan 4, 2022 at 18:23
• Show us your attempt to find the Thevenin voltage. Explain what you mean by "which node to take". Explain why you think a "portion of the circuit doesn't have voltage drop". Jan 4, 2022 at 18:31