LEARNATHON
III

Competition for grade 6 to 10 students! Learn, solve tests and earn prizes!

### Theory

 1 Introduction to electricity 2 Electric current 3 Flow of charges 4 Conventional current 5 Electric potential difference 6 Electric circuit 7 Components in an electric circuit 8 Ohm's law 9 Experimental verification of Ohm's law 10 Conductors 11 Insulators 12 Resistance of a material 13 Electrical resistivity 14 Factors affecting electrical resistivity 15 Conductance of a material 16 System of resistors 17 Resistances in parallel 18 Combination of series and parallel connections 19 Heating effect of current 20 Joule's law of heating 21 Practical applications of heating effect 22 Other applications of heating effect 23 Electric power 24 Electrical energy 25 Mind map

### Exercises

 1 Basics of electricity Difficulty: easy 2 2 Electrical appliances Difficulty: easy 2 3 Circuit connections Difficulty: easy 3 4 Electrical components Difficulty: easy 3 5 Symbols of electrical devices Difficulty: easy 2 6 Electrical instruments Difficulty: easy 2 7 Calculation of current Difficulty: medium 3 8 Effective resistance Difficulty: medium 4 9 Potential difference across the resistors Difficulty: medium 6 10 Circuit current problem Difficulty: medium 4 11 Potential difference Difficulty: medium 4 12 Resistance of a wire Difficulty: medium 4 13 Heating effect in appliances Difficulty: medium 6 14 Resistance calculation Difficulty: medium 5 15 Energy consumption Difficulty: medium 6 16 Resistance analysis Difficulty: medium 6 17 Consumption of current Difficulty: hard 6 18 Differences between electrical terms Difficulty: hard 6 19 Total resistance Difficulty: hard 7 20 Conductivity Difficulty: hard 9 21 Electrical connections Difficulty: hard 6 22 Electric bulb Difficulty: hard 7 23 Electrical components in a circuit Difficulty: hard 6

### Tests

 1 Training test 1 Difficulty: medium 7 2 Training test 2 Difficulty: medium 10

### Teacher manual

 1 Methodical recommendation