Technology : Series and parallel circuits

 Hello everyone, 

In this Technology class we discussed the differences between parallel and series circuits and how to use Ohms law to answer questions about circuits. 

This video is a great resource to give students an overview of the theme: 

Check out the worksheet here:




In a parallel circuit, the current flows along more than one path to each of the components. 

In a series circuit, the current flows along one path through all the components. 


Ohms law :


  1. As the voltage across a resistor is increased, what happens to the resistance of the resistor 

  1. It decreases 

  2. It remains constant 

  3. It increases 


2. What is the current in this circuit? 

  1. 6A

  2. 2A

  3. 0.5 A


3. What is the resistance of the resistor in this circuit? 

  1. 20Ω

  2. 1.8Ω

  3. 0.05Ω


4. If the resistance in the circuit is halved, what will the current be? 

  1. 0.3A

  2. 0.6A

  3. 0.15A


5. The diagram shows part of a circuit. What is the resistance of the resistor shown? 


  1. 9Ω

  2. 4Ω

  3. 0.25Ω


6. The diagram shows part of a circuit. What is the reading shown on the ammeter? 

  1. 0.3A

  2. 3.3A

  3. 21A


7. The diagram shows part of a circuit. What is the reading displayed on the voltmeter? 

  1. 60V

  2. 17.7V

  3. 5.4V


8. What kind of circuit is this? 

  1. Series 

  2. Parallel 

  3. Neither 


9. What is the total resistance of this circuit? 


  1. 500Ω

  2. 1000Ω

  3. 1500Ω


10. If the supply voltage is 12V, what is the current in this circuit? 



  1. 0.005A

  2. 0.008A

  3. 0.012A



Draw figures A, B and C using circuit symbols 


Alice 

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