1.

What is the difference between resistor, rheostat and potential divider?

Answer»

Resistor: a fixed resistance connected permanently in the circuit for limiting the current to definite value is called the resistor. 

Rheostat: a variable resistance by sliding contacts on it the current can be varied is called rheostat. 

Potential divider: when a resistance is used to develop a voltage drop it is called a potential divider.



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