Discussion :: Resistance and Power - General Questions (Q.No.36)
How many connections does a rheostat have?
Answer: Option B
No answer description available for this question.
|Thapar said: (Jul 22, 2012)|
|The most common way to vary the resistance in a circuit is to use a rheostat, a two-terminal variable resistor. For low-power applications (less than about 1 watt) a three-terminal potentiometer is often used, with one terminal unconnected or connected to the wiper.|
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