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  • Find the SI unit of resistivity if    where R

Find the SI unit of resistivity if R = \frac{\rho l}{A }  

where R = resistance and \rho =  resistivity 

Option: 1

ohm m^{-1}


Option: 2

ohm 


Option: 3

ohm - m


Option: 4

ohm - m^2


Answers (1)

best_answer

As we have learned

SI Units -

Resistivity = \Omega - m

Resistance = \Omega (ohm)

Conductance = siemens or \Omega^{-1}

-

 

 R = \frac{\rho l}{A }

\Omega = [\rho ] * m/m^2

[\rho ] = \Omega - m

 

 

 

 

 

 

Posted by

vishal kumar

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