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Download HDI #94-Bulbs in Parallel WS
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Watch Hewitt-Drew-it! Bulbs in Parallel #94 and complete #1 through #10 below. 1. In a ________ circuit the current is the same in successive lightbulbs whatever their ___________. 2. Voltage ________ across particular bulbs in series depends on their ______________. 3. When bulbs are in parallel the voltage across each is the _________ whatever the bulb ________________. 4. In the circuit shown below each bulb is connected to the _________ battery. 6 V across each bulb means that for identical bulbs the _________ in each is _________. Which means that each bulb glows as brightly as they would all __________. If one bulb blows out, the other will _______________ unlike in a series circuit where if one bulb blows out the other will ______________. 5. From Ohm’s law the current in each bulb is __________ which means the current in the battery is ___________. The currents in each branch ___________. 6. _____________ divides, not _____________. 7. Note the currents and their directions in each of the conductors (wires) in the circuit shown below. 8. In a parallel circuit, such as the ones shown above, the overall resistance of the circuit is __________ than the resistance of an individual bulb. 9. The more bulbs that are added in a parallel circuit, the ________ the overall resistance of the circuit. The lower the number of bulbs in a parallel circuit, the __________ the overall resistance of the circuit. 10. For the circuit shown below, answer the following questions: a. When the switch is closed how, if at all, will the brightness of the upper bulbs be affected? b. When the switch is closed how, if at all, will the current drawn from the battery be affected?