Thu September 20, 2012 By: Sahil

QUESTION:State in brief the meaning of variable resistor.Draw a circuit Diagram to illustrate its function specially in the study of variation in current with potential difference across the resistor?;

Expert Reply
Fri September 21, 2012
Its just a rheostat
It basicaly varies the resistance in the circuit and due to ohms law
thus the curent varies inversely proportional to R
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