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name the device used often to change the resistance without changing the voltage source in an electric circuit
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name the device used often to change the resistance without changing the voltage source in an electric circuit

User Harper
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well, a potentiometer can be used to change the resistance with out changing voltage source.

User Nile
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the devices which are used to change the resistance in a circuit are called
resisitors...
the fact that they effect the voltage or not simply depends upon the type of resistor used in the circuit ...:)

User Dimitarvp
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