A combination of resistors in series connected across a voltage source (to produce a required pd)
2 of 5
what are potential dividers used for?
used to supply variable p.d. e.g. application as an audio 'volume' control.
3 of 5
what can be put in the circuit to vary the output voltage?
variable resistors
4 of 5
why should a low-value fixed resistor be placed in series with the variable resistor?
to prevent the full power of the circuit from being routed down the output voltage path if the variable resistor is accidentally moved to a low resistance.
5 of 5
Other cards in this set
Card 2
Front
define potential dividers
Back
A combination of resistors in series connected across a voltage source (to produce a required pd)
Card 3
Front
what are potential dividers used for?
Back
Card 4
Front
what can be put in the circuit to vary the output voltage?
Back
Card 5
Front
why should a low-value fixed resistor be placed in series with the variable resistor?
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