Question

what will be the resistance of a metal wire of length 2meters and area of cross-section 1.55 × 10^-6m^2 ,if the resistivity of the metal be 2.8 × 10^-8 ohms meter​

Answer 1

Answer:

L =2m  ,  A =  1.55* 10^ -6  ,  

ROW= R*A/L

R= ROW*L/A

R = 2.8 * 10^ -8  *  2 / 1.55* 10^-6

R=  560/155 *10^-2

R = 3.61 *10^-2

Hope it helps u !!