Question

When a resistance wire is passes through a die the cross section area decreases by 1 percent the change in resistance of the wire is?

Answer 1

Answer: If cross section area increases by 1% the resistance would have decreased by almost 1%. Also resistance is inversely proportional to the cross-section area of wire. Lets say w... ... Percentage decrease in Resistance: = ( ( R − R ... Why does the resistance of a wire vary with its area of cross section?