EDIT: The chain is connected to a battery, thus the current in this chain is direct.
When the electric chain's switch (J) is on, resistance Rab (from dots A to B) is equal to 80 Ohms.
What is the electric chain's resistance when the switch (J) is off?
The Attempt at a Solution
I thought that the resistors are connected in parallel , but my teacher said that when the switch if on resistors are connected in parallel and when it's off it's in series.
Is this true, cause I think it's parallel, because the wires split either way, no matter if the switch is on or not...
Don't know for sure what's the connection type in this chain, so...