Page 136 - SK Year 5 Science DLP
P. 136
NUMBER OF BULB
Ana, in your opinion, I don’t think so, Ravi.
does the brightness A parallel circuit has more
of the bulb in than one path for the electric
a parallel circuit current to flow. Therefore,
decrease if the the total amount of electricity
number of bulbs that flows in each path is
increases?
the same.
I agree with you, Ana.
When the number of bulbs
increases, the brightness You can carry out
of the bulbs in a parallel an experiment
circuit does not change. to prove the
hypothesis.
one bulb two bulbs three bulbs
Wow, the bulbs in all
three parallel circuits
have the same Circuit A
brightness!
Circuit B
This proves that when the
number of bulbs increases, Circuit C
the brightness of the bulbs in a
parallel circuit does not change.
What is your conclusion about the factors
affecting the brightness of bulbs in series and
parallel circuits?
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