Individually unscrew bulb A, bulb B, and then Bulb c to test what happens to the
ID: 1599380 • Letter: I
Question
Individually unscrew bulb A, bulb B, and then Bulb c to test what happens to the rest. Explain what happens physically to the current. The results of experiment IV F may seem puzzling. The idea that two bulbs in parallel present a smaller obstacle to the flow of electric current that a single bulb is difficult to understand!! One way to think about the changes in current when the bulbs are connected in parallel is to consider the additional pathways available to the current after it passes through the bulb. Not only is the pathway through the original bulb B available, but other pathways become available when additional bulbs are connected in parallel with bulb B. Think about drinking a milkshake through a single straw or two straws. It's easier to "slurp" up that milkshake through two straws than one--- there's less of an obstacle to the flow of the milkshake. There are two paths for the shake to take. G. Consider the following dispute between students: Student #1: Adding bulbs to a circuit increases the total resistance. There is a bigger obstacle to the current so less flows. Student #2: Adding bulbs to a circuit may increase or decrease the total resistance. It all depends on how you add them. If you add them in parallel you've given the current more pathways so the total resistance is less. Do you agree with Student #1 or #2? Explain your reasoning below.Explanation / Answer
student 1 is correct ....... adding bulbs to a circuit power gets lowered.......and the resistance increases