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what is Rheostat ?

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what is Rheostat ?
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Answer :

Variable resistor
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Answer :

Rheostat is varible resistance device which gives large range variation in resistance generally used for operating electrical motors
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A rheostat differs from potentiometer in the respect that it?

Description : A rheostat differs from potentiometer in the respect that it?

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Description : What is the purpose of the rheostat in ohmmeter?

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