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Home Q & A Board Science-Related Homework Help Physics
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rinadtartir rinadtartir
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11 years ago
Our Physics class constructed series and parallel circuits using the same equipment (1 resistor, 3 LEDs). As a result, the numerical values of the current of electrical charge, resistance, voltage, and power of each circuit was the same. Does this information mean that the brightness of the LEDs from each circuits is the same?

Please explain why whether it is yes or no.
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#1
11 years ago
Not necessarily, the brightness of the leds will depend on the current that flows through them. If the current through the LEDs is the same then the brightness will be the same. If the one resistor and the three leds are in series, then the three leds will have same brightness in the series configuration. If the one resistor is in series and the three leds are in parallel with each other, they will also have the same brightness with respect to each other. However the brightness of this configuration will be different than the configuration in series. because the current flowing through the resistors will vary in the two different configurations
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