Ohm-metre is the unit of

Resistance

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Conductance

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Resistivity

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Voltmeter

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Solution

The correct option is C Resistivity
We know,
Resistance, $R = ρ \frac{L}{A}$ , where $ρ$ is resistivity, $L$ is length in $m$ , $A$ is area in $m^{2}$
Therefore, $ρ = \frac{R A}{L} = \frac{Ω m^{2}}{m} ⟹ ρ = Ω m$

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Similar questions

The electrical resistivity of four materials A ,B, C and D are given as

A=110×10^-8 ohm metre

B=1×10¹⁰ ohm metre

C=10×10^-8ohm metre

D=2.3×10³ ohm metre

which material is

1) good material

2) resistor

3) insulator

4) semi-conductor

Give reasons for your answer.

A metal wire of specific resistance 64×10^-6 ohm metre and length 1.98 cm has resistance of 7 ohm find its radius

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