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Q) What is resistance , resistor and resistivity ??
Class 10
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Resistance :-
=>It is the opposition to the flow of electric current across a conductor.It is the internal property of conductor.
=> S.I unit :- Ohm
Resistor:-
=> It is the component of electric current which offers high resistance to the flow of electric current.
=> S.I unit :- Ohm
Resistivity :-
=> Rho is a constant and is called Resistivity or specific resistance . Resistivity of a material is the resistance of a conductor of unit lenght and unit cross sectional area .
=> S. I unit:- Ohm metre.
=>It does not depend upon length and area of the material it only depends upon the nature of material.
=>It is the opposition to the flow of electric current across a conductor.It is the internal property of conductor.
=> S.I unit :- Ohm
Resistor:-
=> It is the component of electric current which offers high resistance to the flow of electric current.
=> S.I unit :- Ohm
Resistivity :-
=> Rho is a constant and is called Resistivity or specific resistance . Resistivity of a material is the resistance of a conductor of unit lenght and unit cross sectional area .
=> S. I unit:- Ohm metre.
=>It does not depend upon length and area of the material it only depends upon the nature of material.
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Answered by
10
Resistance is the property of the conductor which opposes the flow of current (I) flowing through it at given voltage (V). i.e. R = V/I
Resistor is the equipment/component used to add resistance in the given circuit.
Resistivity is a measure of the resistance of a given size of a specific material to electrical conduction.
R = ρL/A
R = Resistance
ρ = Resistivity of that material/conductor, whichis temperature dependent
L= Length of that material/conductor
A = Cross sectional area of that material/conductor
The SI Unit for Resistance is Ohm (Ω), whereas the SI unit for resistivity is Ohm.meter (Ω⋅m).
Resistor is the equipment/component used to add resistance in the given circuit.
Resistivity is a measure of the resistance of a given size of a specific material to electrical conduction.
R = ρL/A
R = Resistance
ρ = Resistivity of that material/conductor, whichis temperature dependent
L= Length of that material/conductor
A = Cross sectional area of that material/conductor
The SI Unit for Resistance is Ohm (Ω), whereas the SI unit for resistivity is Ohm.meter (Ω⋅m).
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