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What is the resistance of a cell with electrodes that are 6 cm apart and 3 $cm^2$ in area with a substance of resistivity 0.5
Option: 1
$1\Omega$

Option: 2
$1.5 \Omega$

Option: 3
$0.5 \Omega$

Option: 4
$9 \Omega$

Answers (1)

best_answer

As we have learned

Electrical Resistance -

$R=\frac{\rho\ l}{A}$

- wherein

$\rho=$ resistivity of the substance

l = length

A = Area

$R = \frac{\rho l}{A} = \frac{0.5*6}{3}= 1\Omega$

Posted by

Anam Khan

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