![Ratio of resistiviities of wires X and Y – effect of diameter on cross-sectional area | Evan's Space Ratio of resistiviities of wires X and Y – effect of diameter on cross-sectional area | Evan's Space](https://evantoh23.files.wordpress.com/2015/09/notes-page17.jpg)
Ratio of resistiviities of wires X and Y – effect of diameter on cross-sectional area | Evan's Space
Calculate the electric field in a copper wire of cross sectional area 2mm^2 carrying a current of 2 ampere; given that resistivity of copper wire is 1.7×10^ 8 ohm m.
A 2 mm^2 cross - sectional area wire is stretched by 4 mm by a certain weight.If the same material wire of cross - sectional area 8 mm^2 is stretched by the
8.nd the resistance of variable cross section wire having radious small section a large section b. And length of wire L. (resistivity of wire is given rho)
![A current of 5 A is passing through a metallic wire of cross - sectional area 4 × 10^-6m^2 . If the density of charge carriers of the wire is 5 × A current of 5 A is passing through a metallic wire of cross - sectional area 4 × 10^-6m^2 . If the density of charge carriers of the wire is 5 ×](https://toppr-doubts-media.s3.amazonaws.com/images/4770204/b20ec376-d543-4bf4-8d30-954c44573710.jpg)
A current of 5 A is passing through a metallic wire of cross - sectional area 4 × 10^-6m^2 . If the density of charge carriers of the wire is 5 ×
![A copper wire of length L and cross - sectional area A carries a current I . If the specific resistance of copper is S , then what is the electric field A copper wire of length L and cross - sectional area A carries a current I . If the specific resistance of copper is S , then what is the electric field](https://dwes9vv9u0550.cloudfront.net/images/8852100/690fadc3-ac55-45a4-87e1-8b475059ed10.jpg)