Physics, asked by aiyadrathor2293, 10 months ago

Define switch and rehostat and resitvity

Answers

Answered by paritoshprasad077

1

Answer:

Rehostat :- It is a variable resistor which is used to control current in a system .
Switch :- It is device which is used to complete or break the circuit at any time .
Resistivity :- The resistivity of a material is the resistance of a wire of that material of unit length and unit cross-sectional area

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