State the characteristics of connecting resistances in series.

If the resistors are connected in series then :
1. In a circuit the current is the same in every part of the circuit.
2. The resistance of the combination of resistors is equal to the sum of the individual resistors.
3. The total voltage across the combination is equal to the sum of the voltage drop across the separate resistors.
4. The effective resistance in a series combination is greater than the individual resistances.
5. This combination is used to increase resistance in a circuit.