The electrical resistivity of few materials is given below in ohm meter Which of these materials can be used for making element of a heating device CBSE physics class 10

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The electrical resistivity of few materials is given below in ohm-meter. Which of these materials can be used for making element of a heating device? -CBSE physics class 10

A 6.84 x 10-8
B 1.60 x 10-8
C 1.00 x 10-4
D 2.50 x 1012
E 4.40 x 10-5
F 2.30 x 1017


By:milan-ransingh

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D= 2.50 x 1012 and F=2.30 x 1017 because of their high resistivity.
Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) is an intrinsic property that quantifies how strongly a given material opposes the flow of electric current. A low resistivity indicates a material that readily allows the flow of electric current. Resistivity is commonly represented by the Greek letter ρ (rho). The SI unit of electrical resistivity is the ohm-metre (Ω⋅m).


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