Lakhmir Singh and Manjit Kaur Solutions for Chapter: Electricity, Exercise 17: Short Answer Type Questions

What would be the effect on the resistance of a metal wire on: increasing its diameter?

What would be the effect on the resistance of a metal wire on: increasing its temperature?

How does the resistance of a wire vary with its: area of cross-section?

How does the resistance of a wire vary with its: diameter?

How does the resistance of a wire change when: its length is tripled?

How does the resistance of a wire change when: its diameter is tripled?

How does the resistance of a wire change when: its material is changed to one whose resistivity is three times?

Calculate the area of cross-section of a wire if its length is $1.0 \mathrm{m},$ its resistance is $23 \mathrm{\Omega },$ and the resistivity of the material of the wire is $1.84\times {10}^{-6} \mathrm{\Omega m}.$