Problem 31.12 All the power sources (batteries or capacitors) in (Figure 1) star

Question

Problem 31.12

All the power sources (batteries or capacitors) in (Figure 1) start with a potential difference of 9.0 Vbetween their terminals, and all of them run down (decrease in potential difference) over time.

Part A

Rank the brightness of these identical light bulbs from most bright to least bright. The t values in parts (d) through (g) refer to the time interval that has passed since the power source was connected to the load.

Rank from most bright to least bright. To rank items as equivalent, overlap them.

Problem 31.12

All the power sources (batteries or capacitors) in (Figure 1) start with a potential difference of 9.0 Vbetween their terminals, and all of them run down (decrease in potential difference) over time.

Part A

Rank the brightness of these identical light bulbs from most bright to least bright. The t values in parts (d) through (g) refer to the time interval that has passed since the power source was connected to the load.

Rank from most bright to least bright. To rank items as equivalent, overlap them.

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Explanation / Answer

Here ,

Now , for the brightness of light bulbs

for ranking from most brightness to least brightness

1) g , e

2) d - the initial current in the circuit is mostly equal to maximum current

3) f - after a long time , the current will be very small

4) a , b , c - as the circuit is open all of these circuits , there will be no current and therefore ,

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