In this post, let’s look at what’s tested in detail for D.C circuit for O Level physics.
I go through the points in detail in my video here.
This is a chapter with mainly calculations, hence, knowing all the formulae is essential. You can find a list of formulae for O Level Physics here.
Below is a checklist of what you need to know for O Level Physics on the topic current electricity.
Checklist for D.C Circuit for O Level Physics
✓ draw circuit diagrams of:
- power sources (battery, d.c. supply or a.c. supply)
- switches
- lamps
- resistors (fixed and variable)
- potentiometer
- fuses
- ammeters
- voltmeters
- bells
- light- dependent resistors (LDR)
- thermistors
- light- emitting diodes (LED)
✓ series circuit: finding current, potential difference and effect resistance
✓ parallel circuit: finding current, potential difference and effect resistance
✓ Using V = RI in calculations involving circuit
✓ describe the action of a potentiometer
✓ describe the action of thermistors and light-dependent resistors and apply them to scenarios
✓ solve simple circuit problems involving thermistors and light-dependent resistors
Watch the video below to learn D.C circuit in detail.