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

As the resistance of a wire is inversely proportional to the square of the diameter of a conducting wire if its diameter is tripled its resistance becomes 9th part of the previous resistance.

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

From this relation we can conclude that resistance is inversely proportional to area A of the conductor. Area of the conductor becomes 4 times the area of the conductor without doubling the diameter. Thus, we can say that new resistance will decrease four times.

How is the resistance of a wire affected if radius of the wire is tripled?

(a) Resistance of a wire is directly proportional to the length of a wire; so if the length is doubled, resistance is also doubled. (b) Resistance of a wire is inversely proportional to the area of cross-section the wire. Thus, if radius is doubled, area increases four times and hence the resistance becomes one-fourth.

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

Solution : Resistance becomes 3 times.

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

c) it’s material is changed to one whose resistivity is three times thats it the resistance will decrease nine times of initial.

How does the resistance and resistivity change if area is change?

Resistance is proportional to resistivity and length, and inversely proportional to cross sectional area.

How much does the resistance of a wire changes if its diameter?

So the wire resistance is inversely proportional to diameter or cross sectional area. this means when the diameter of the wire is doubled, the resistance will be 1/4 of the original value due to R is inversely proportional to π(d/2)².

How does the resistance of a wire change when diameter is halved?

Resistance is inversely proportional to cross sectional area. So if the diameter is halved the cross-sectional area is quartered and the resistance is quadrupled.

What happens to the resistance of a wire when?

So we know that cross-sectional area is directly proportional to the radius of the wire. Therefore, if the cross-sectional area decreases, the resistance will increase.

What happens to the resistance if diameter of wire becomes half?

MCQ : If the diameter of a resistance wire is halved then its resistance becomes. The area of the cross-section will get reduced by four times. Thus, the resistance will increase by four times.

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