GCSE Resistors BS1852 Colour Codes E24 LDR Parallel PIVR Calculations Potentiometer >Puzzles< Series Thermistor Timing Types Voltage Divider |
Resistors Puzzles |
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Here are four identical 10k resistors. In series they combine to make 20k. In parallel they combine to make 5k.
When the switch is closed, the ammeter current doubles.
When the switch is closed, the ammeter current doubles.
When the switch is moved to the NO (normally open) position, the current drops to half.
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