Malaysia SPM syllabus Chapter 7 Part 3: Series and Parallel Circuits ::Slide-making service available. For more info, contact coolcikgu@gmail.com:: Contact us for your presentation design needs: lesson / teaching, wedding, seminar, workshop, client pitch etc.

1. Chapter 7:
Electricity
Part 3: Series and Parallel Circuits

2. Series Circuits
To form a single path for current flow

3. Series Circuits
Therefore each bulb glows dimly
  

4. Series Circuits
Therefore brightness of each bulb is
the same
  

5. Series Circuits
And the other bulbs go out as well
  

6. Parallel Circuits
To form separate and parallel
paths for current flow

7. Parallel Circuits
Each bulb is connected
directly to the battery


Because each bulb gets the
full potential difference 

8. Parallel Circuits


Than each bulb in a series
circuit 

9. Parallel Circuits
The circuit remains unbroken


So the other two bulbs will
remain to work 

10. Compare the Circuits’ Current
Series Circuit Parallel Circuit
A X
A1
3Ω
X Y Y
A1 A2 A2
3Ω 1Ω 1Ω
Current has only one path to flow Current splits into different paths
Reading on A1 = Reading on A2 Reading on A = Reading on A1 + A2
Same current flows through each Main current is shared between the
resistors two resistors

11. Compare the Circuits’ Potential Difference
Series Circuit Parallel Circuit
X Y V1
X 3Ω
3Ω 1Ω
V1 V2 Y 1Ω
V V2
Reading on V = Reading of V1 + V2 Reading on V1 = Reading on V2
Potential Difference is shared by the Potential difference is the same
two resistors across each resistor

12. Compare the Circuits
Series Circuit Parallel Circuit
 
When one bulb has blown up When one bulb has blown up
The other bulb would not be able to The other bulb can still light up
light up

13. Compare the Circuits
Series Circuit Parallel Circuit

  
Dimmer bulbs Brighter bulbs
Less voltage across each bulb Higher voltage across each bulb
Less current pass through each bulb Larger current pass through each
bulb

14. Determining Effective Resistance
Series Circuit Parallel Circuit
I1 R1 I2 R2 I3 R3
I
R1 V1 R2 V2 R3 V3
V1 V2 V3 V
V I1 I2 I3
I
Current
Potential
Difference
Resistance