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PARALLEL CIRCUITS

V. Ryan © 2005 - 2009

 

PDF FILE - CLICK HERE FOR PRINTABLE EXERCISE BASED ON WORK BELOW

The circuit below shows three bulbs placed in parallel. This is a parallel circuit. Current can flow through each of the bulbs without first having to flow through any others. If any of the bulbs fail the others will still work as current can still flow through the rest of the circuit.

   

   

 

   
ANOTHER PARALLEL CIRCUIT

The circuit below is another example of a parallel circuit. When the switch is turned on current flows through the bulb, solenoid and motor simultaneously. This causes the bulb to light, the solenoid to the activated and the motors spindle to rotate, all at the same time.

 

 

 

 

PICTORIAL DRAWING OF THE SAME PARALLEL CIRCUIT DIAGRAM
   

   
Crocodile Technology © software is very useful when simulating this type of circuit diagram.
   
QUESTIONS:
1. Draw a simple parallel circuit and explain how it works.
2. Draw the same components but this time arranged as a ‘series’ circuit. How do the two circuits differ?
3. What will happen if one of the components fails in a parallel circuit?
   
 
   
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