Suggest an experiment to compare the conductivity of electricity by iron, copper, aluminium and zinc. Perform the experiment and prepare a short report on the results.
NCERT Class VIII
Science - Main Course Book
Chapter 4. Materials: Metals and Non-metals
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Aim :
To compare the electrical conductivity of different metals.
Apparatus :
cell, torch bulb fitted in a holder,connecting wires, different metal strips
Procedure:
1. Let us make a simple circuit by connecting one end of the torch to cell and other end end of torch to metal strip and to cell back [as shown in the figure]
2.Let us insert a piece of Aluminium foil between the wires .And we will observe
3.Repeat the same activity with different metal strips like Iron, copper and zinc.
Observation:
1. In case of aluminium,iron,copper and zinc we observe that , bulb glows in the circuit.
2. This experiment proves that all metals are good conductors of electricity
3. Copper wire is the best conductor among all the metals.
Conclusion:
This experiment proves that all metals are good conductors of electricity and
Copper wire is the best conductor among all the metals.
To compare the electrical conductivity of different metals.
Apparatus :
cell, torch bulb fitted in a holder,connecting wires, different metal strips
Procedure:
1. Let us make a simple circuit by connecting one end of the torch to cell and other end end of torch to metal strip and to cell back [as shown in the figure]
2.Let us insert a piece of Aluminium foil between the wires .And we will observe
3.Repeat the same activity with different metal strips like Iron, copper and zinc.
Observation:
1. In case of aluminium,iron,copper and zinc we observe that , bulb glows in the circuit.
2. This experiment proves that all metals are good conductors of electricity
3. Copper wire is the best conductor among all the metals.
Conclusion:
This experiment proves that all metals are good conductors of electricity and
Copper wire is the best conductor among all the metals.
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