It Increases because the amount of resistance gets added up giving us the equivalent resistance.

In a series combination, the total resistance increases.

Explanation:

Definition of series combination:
When multiple resistors are connected in a series combination, they are connected end-to-end so that the current flows through one resistor and then through the next resistor, and so on.

Explanation:
When resistors are connected in series, the total resistance is equal to the sum of the individual resistances. This can be understood by considering the flow of current in a series circuit.

Flow of current in a series circuit:
- In a series circuit, the same current flows through each resistor.
- The total voltage applied across the series combination is shared by the individual resistors based on their resistances.
- The voltage across each resistor is directly proportional to its resistance.
- As the current flows through each resistor one after the other, the voltage drops across each resistor add up to the total voltage.
- According to Ohm's Law, the voltage drop across a resistor is directly proportional to its resistance and the current passing through it (V = IR).
- Therefore, the total resistance in a series combination is responsible for the total voltage drop and affects the flow of current.

Effect of increasing resistance:
- When resistors are connected in series, the total resistance increases.
- This is because the current has to overcome the resistance of each individual resistor, resulting in a higher overall resistance.
- The higher the resistance, the more difficult it is for the current to flow.
- As a result, the total resistance in a series combination is greater than the resistance of any individual resistor.

Conclusion:
In a series combination, the total resistance increases due to the cumulative effect of the resistors. This is an important concept in understanding the behavior of series circuits and calculating the total resistance.