Calculate the area of cross section of a wire if its length is 1.0m its resistance is 23ohm

Calculate the area of cross section of a wire if its length is 1.0m it

1.	Calculate the area of cross section of a wire if its length is 1.0m its resistance is 23ohm
Answer» I = 1.0 mR = 23 ohmp = 1.84 × 10-6 ohm – meterWe haveR = P. I/A23 = 1.84 × 10-6 × 1/AA = (1.84 × 10-6 )/23= 0.08 × 10-6 m2= 8 × 10-8 m2