@rhettallain0: #physics question. Which set of #capacitors will light the bulb the longest? #circuits

Rhett Allain
Rhett Allain
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Friday 02 October 2026 15:25:52 GMT
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katadiann
Katadiann :
A and B same time C longest B most light
2026-10-02 17:28:34
42
robertcedro982
robertcedro982 :
0.25 Farad Cap A single 0.25F benchmark discharge time B 2x series = 0.125F = 1/2 discharge time than A C 2x parallel = 5F = 2x discharge time than A
2026-10-03 06:34:04
4
fingers109
LongDarkTeaTimeOfTheSoul :
C longest, B brightest
2026-10-02 16:32:09
21
rinaruiner
TrondOines :
C longest. A and B will be the same, because B is charged to only 50%
2026-10-02 21:00:01
6
puppy.zwolle
Puppy Zwolle :
B burns longer (but almost the same as A) C burns brighter.
2026-10-03 04:07:45
1
timon.nabholz
Timon Nabholz :
C, because a capacitor is basically just two metal plates with an insulator in between. If you put two in parallel, the plate area, where electrons accumulate, doubles, thus the capacitance is also twice as big
2026-10-02 15:50:50
18
mattstankey
Matt Stankey :
A) .25F B) .125F C) .5F so C discharges slower.
2026-10-02 15:50:09
16
spindr1ft
SpinDr1ft :
C. Wouldn't B up the voltage but not the capacity?
2026-10-03 14:33:20
0
point_naturel
point_naturel :
On the papier it takes an infinite time to discharge for all 3 ….
2026-10-03 07:16:39
0
zolilezoko
zolile :
Time constant=R*C, the largest value of C is only possible with option C so the correct answer is C
2026-10-02 22:45:16
0
wolak_walik
wolakʞᴉlɐʍ :
A capacitor discharges exponentially: single gives standard duration, series reduces capacitance (shorter glow), and parallel increases capacitance for a longer LED runtime.
2026-10-03 03:48:42
2
isle_of_wight.uk
isle-of-wight.uk :
What happens if a child tries this out and touches that capacitor it could instantly kill
2026-10-03 08:16:21
0
_.solo.unus._
加油 Lion :
C longest, B brightest
2026-10-02 18:20:16
9
jasonreqyo
jasonreqyo :
B is only 50% charged, so it would be the same as A, C would be double as long
2026-10-02 18:29:56
5
nickmiele22
Nick M :
so funny to see information from my field because sometimes it feels like everyone knows this and it's obvious but that is simply not the case
2026-10-03 13:08:17
0
leckiestein
🇨🇦leckiestein :
Current on each cap will be highest in B meaning it will be the fastest.. current on each cap will be lowest in C meaning it will be the longest.
2026-10-03 14:29:32
0
time_after
Time~🕛 :
c, and b has the potential to burn the bulb.
2026-10-03 04:16:00
0
jurgendebruyne597
jurgendebruyne597 :
C longest
2026-10-03 13:56:13
0
user9788513271194
CCJ_125 :
B longer, C brighter
2026-10-03 06:34:10
0
dannyd50mini
Danny :
D would last the longest. C would make the light brighter?
2026-10-03 07:57:26
0
theapocalypsehasbegun
Apocalypse :
B will burn the light bulb or make it light a lot stronger, C will last double.
2026-10-03 06:13:08
0
sorokox
sorokox :
parallel combination increases effecttice capacitance - energy stored is increases so series case will glow brighterest
2026-10-02 23:30:10
0
albertmalvino707
Albert Malvino707 :
That's a 25000 μF capacitor so it's 0.025 Farads, not a 0.25. Still huge capacity and I did not expect it to discharge so quickly.
2026-10-03 05:42:42
0
herr_umdrehen
Herr Umdrehen :
there are formulas for calculating the capacitance for capacitors in series and capacitors. in parallel, the parallel Arrangements will double the capacitance in series. I think it's one over capacitor. 1 + 1 over capacitor 2.... One over capacitor n
2026-10-02 23:00:58
0
golfforlifetime
golfforlifetime :
Option c will make the light glow longer
2026-10-02 21:56:54
0
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