What is the relationship between length of a conductor and its resistance ? Write the experimental procedure to verify that relationship.

Explanation

Aim : To verify the realtion between resistance and length of the conductor.
1. Required material : Wires or spokes of different length with same cross-section area of the same metal.
2. Battery
3. Ammeter
4. Key
5. Connecting wires.
Procedure :
1. Construct a circuit with Battery, Ammeter, Switch (key) and connecting wires, Keeping some space at the both ends.
2. Connect the selected wires or spokes at the ends to complete the circuit.

3. Connect the wires or spokes individually and record the current using ammeter.
Conclusion :
If the current flowing in the circuit decreas with an increase in the lenght of the is proportional to length of the conductor.