[ARCHIVED] Series and Parallel Circuits | AS DC Electricity

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Combined resistance: origin story of the formulas and how to use in circuits! #ASphysicsCh20
00:00 Intro
01:51 Derive: Resistor in Series
06:54 Derive: Resistors in Parallel
13:23 Total Resistance (ON15 P12 Q36)
16:28 Combined Resistance (ON14 P11 Q37)
19:24 Resistor Voltmeters (MJ14 P12 Q36)
25:19 Bulb brightness (ON14 P11 Q30)
35:32 Series and Parallel Resistors (ON14 P22 Q5)

Error update:
At 32:49, the combined resistance of both bulbs in parallel should be 0.5R, not 1.5R, and accordingly, V1 should be bigger than V2.
(Brain jam moment where my brain thinks 0.5R, but hand writes 1.5R hmmm)

AS Ch20 #DCcircuits Playlist

Practice Structured Questions:
ON12 P22 Q5 (pg53) Wire circuit
MJ14 P21 Q6 (pg58) Two lightbulbs*
ON14 P22 Q5 (pg62) Series vs Parallel
ON15 P22 Q5 (pg68) Parallel lines
FM17 P22 Q6 (pg74) Parallel resistors

Practice Objective MCQ's:
MJ18 P13 Q34 (pg47) Current through resistors
MJ18 P12 Q36 (pg46) Greatest current?
FM18 P12 Q38 (pg44) Total resistance
ON17 P12 Q34 (pg42) Power losses
MJ17 P11 Q37 (pg39) Resistor combo
ON16 P12 Q37 (pg36) Currents
FM16 P12 Q36 (pg32) Deriving with Kirchoff
FM16 P12 Q35 (pg31) Total resistance
ON15 P12 Q36 (pg30) Total resistance
MJ15 P13 Q37 (pg28) Combined current

MJ15 P11 Q38 (pg26) Wire resistance
ON14 P11 Q37 (pg24) Combined resistance
ON14 P11 Q30 (pg23) Bulb brightness
ON14 P11 Q35 (pg23) Parallel resistance
MJ14 P13 Q38 (pg22) Change in current
MJ14 P12 Q36 (pg21) Resistor voltmeters
MJ13 P13 Q37 (pg16) Resistor combo
MJ13 P12 Q37 (pg14) Combined resistance
MJ13 P11 Q36 (pg12) Incorrect circuit
MJ12 P12 Q38 (pg7) Resistor networks
MJ12 P11 Q38 (pg6) Circuit current

Tuition/Tutoring inquiries:

Videos are recordings of lessons at MCKL. #CambridgeALevelPhysics
  1. ETphysics
  2. Advanced Level
  3. A-Level
  4. A Level
  5. AS
  6. CIE
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Комментарии
Автор

At 35.16
Why did power of B2 increase when we use V^2/r
As v2 is less that V1

mohammedabaannoor
Автор

Thank you so much for this amazing video❤️
I had a question (ON 14p11q30) at 34:00 why did we assume that the resistance is constant didn’t the total resistance change when switch is opened

mennaassal