Electronics - Series Circuits - Discussion

When you have three resistors connected in series with a battery of 28V, and then one resistor is open-circuited (removed from the circuit), the voltage across the remaining resistors will be the same as the battery voltage.

This is because, in a series circuit, the same current flows through all components, and the voltage is divided among the resistors. When one resistor is removed (open-circuited), there is no longer any voltage drop across it, but the battery voltage is still applied to the remaining components.

So, in this case, the voltage across any of the two remaining resistors (which are still connected in series with the battery) will be the same as the battery voltage, which is 28V.

The reason behind no current because in Series condition all the resistors have same amount of current flow through it so if r2 is open and other will not that's mean input voltage = output voltage.

This is not in the parallel form we are still in series circuits discussion.

No KVL for this circuit. Because those resistors are in parallel form.

In parallel form resistors voltage drop is equal.

When circuit is open there will be no current, so voltage will be same as source voltage.

Deqar Ravuteja Sreeyush is correct when circuit is open the V will be same as source V.

Dear sreeyush sudhakaran what you are saying it is applicable to parallel circuits why means voltage remains same in parallel circuits.

And in case of series circuits current remains same.

When R2 is opened there is no current flow in the circuit.

So terminal voltage = Source Voltage

By KVL

So option (C) is right.