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GCSE     Resistors     BS1852     Colour Codes     E24     LDR     Parallel     PIVR Calculations     Potentiometer     >Puzzles<     Series     Thermistor     Timing     Types     Voltage Divider    

Resistors Puzzles


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  GCSE    Resistors  0 of 27    Question 1372    BS1852 Resistors 
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Deadline not set18 of 27    Question 438    Ohm's Law and Current Calculations 
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Deadline not set21 of 27    Question 561    Resistors 
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Deadline not set23 of 27    Question 178    Resistors in Series 
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Deadline not set24 of 27    Question 526    Thermistors 
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Understanding Resistors

Here are four identical 10k resistors. In series they combine to make 20k. In parallel they combine to make 5k.

Resistors in Series or Parallel

When the switch is closed, the ammeter current doubles.

Close Switch Current Doubles

When the switch is closed, the ammeter current doubles.

Close Switch Current Doubles

When the switch is moved to the NO (normally open) position, the current drops to half.

Close Switch Current Halves

 

 

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