Question

how does the resistance of a wire vary with its area of cross section??​

Answer 1

❤Hey!❤

Resistance of a wire is inversely proportional to it's area of cross section that is when area of cross section increased the resistance decreases.

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Answer 2

Resistance of a wire vary with its area of cross section in following ways :----

• We know that Resistance is the properties of Resistor convert electrical energy to heat energy .
• Resistor is denoted by 'R'
• where R = row *length /area
• Resistance is inversely proportional to the area of wire .When area become large resistance become small vice - versa .
• Resistance is inversely proportional to square of radius of circular wire .
• the unit of Resistance is R