ELECTRICITY

Group members:

Kanakesvary PoongavanamSadayammah Mannar MannanKayalvili DurairajLaura Maniam

Experiment 1

Series and Paralell circuit

Hypothesis : The brightness of parallel circuit bulb is more bright than serial circuit bulb

Apparatus :1) Batteries 2) Bulb 3) Wire 4) Battery Holder 5) Bulb Holder

Constant variables: Number of batteries, length of wire, number of bulbs (2)Manipulated variables: serial circuit and parallel circuitsResponding Variables: Brightness of bulb

PARALLEL CIRCUIT

SEREIS CIRCUIT

Result :-

Type of circuit

Serial Circuit

Parallel Circuit

Brightness of bulbs

Bulbs light up brightly

Bulbs light up more brightly

Conclusion

Bulb in parallel circuit light up more brighter than bulbs in serial circuit. It because each bulb in parallel circuit receives same amount of electricity compared to serial circuit bulbs.

Experiment 2

To study the brightness of the bulb and number of the bulbs in a circuit.

Hypothesis: Brightness of bulb will be dimmer if the number of bulb increased

Apparatus : 1) Batteries2) Bulb3) Wire4) Battery Holder5) Bulb Holder

Constant variables: Number of batteries Manipulated variables: Number of bulbsResponding Variables: Brightness of bulb

Images

Set A Set B

Result :-

Bulb in set A is brighter than bulbs in set B.

Conclusion

The brightness of bulb decrease when the number of bulbs in a circuit increased while the number of batteries are remain same.