Sagot :
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 ...:)
resisitors...
the fact that they effect the voltage or not simply depends upon the type of resistor used in the circuit ...:)
well, a potentiometer can be used to change the resistance with out changing voltage source.