Please provide a clear and detailed explanation for Problem A ~ E (do not just a

Question

Please provide a clear and detailed explanation for Problem A ~ E (do not just answer yes or no).

III. Bulbs in parallel Set up a two-bulb circuit with identical bulbs so that their terminals are connected together as shown. Bulbs connected together in this way are said to be connected in parallel. A. Compare the brightness of the bulbs in this circuit What can you conclude from your observation about the amount of current through each bulb? 1. Describe the current in the entire circuit. Base your answer on your observations. In particular, how does the current through the battery seem to divide and recombine at the junctions of the two parallel branches? 2.

Explanation / Answer

Solution) A 1)

Here the battery supplies current I which gets divided into i1 and i2

If they are identical bulbs so they have same resistance also as they are connected in parallel they have same voltage

So they both have same currents in this case

If they are unidentical their resistances differ so they have different currents so different brightness

If only single bulb is used then current is not divided so it has more current

If identical bulbs even though one bulb current will be same

(B) brightness of two bulbs in parallel will be less compared to single bulb

Current as already discussed in part A

(C) current through battery will increase as resistance decrease

If number of parallel branches increases then current through bulbs differ as total resistance of the circuit decreases as number of parallel branches increases

We have for two resistors in parallel Req=((R1)(R2)/(R1+R2))

(D) yes it depends as the resistance changes based on the way bulbs are connected and number of branches

(E) yes as resistance change so current also change

We have V=iR

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