# Transient Response question. I want to know why during t>0, the voltage source has been short circuited?

Can anybody please explain why the voltage source has been short circuited here after the switch has been closed at t=0. Thank You.

• With voltage source, they mean: the voltage source with the 2 $\Omega$ is in series. I agree they are technically incorrect saying the voltage source is short-circuited. Does this help you understand it? – Huisman Jun 20 at 7:02
• Alright, voltage source with 2ohm in series. But why? What's the logic here? – Yash Gupta Jun 20 at 8:52
• No idea. Maybe the 2ohm resistor should represent the internal resistance of the voltage source? – Huisman Jun 20 at 9:03