# How does the resistance of a wire depend on it?

## How does the resistance of a wire depend on it?

The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. Resistance also depends on the material of the conductor. The resistance of a conductor, or circuit element, generally increases with increasing temperature.

## How does the resistance of a wire change when its radius is tripled?

Resistance becomes 3 times.

How does resistance depend on diameter?

The greater the diameter of the cylinder, the more current it can carry (again similar to the flow of fluid through a pipe). In fact, R is inversely proportional to the cylinder’s cross-sectional area A. The larger its cross-sectional area A, the smaller its resistance.

### How does resistance and specific resistance of a wire depends on its length and radius?

Resistance is directly proportional to the length and inversely proportional to the square of radius. Specific resistance is independent on the dimensions of a wire.

### Does resistance increase with radius?

In contrast, an increase in radius will reduce resistance. Furthermore, the change in radius alters resistance to the fourth power of the change in radius. For example, a 2-fold increase in radius decreases resistance by 16-fold! Therefore, vessel resistance is exquisitely sensitive to changes in radius.

How does the resistance of the wire change when?

The resistance of a wire is directly proportional to its length and inversely proportional to its area (or square of inverse of diameter).

#### 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.

#### Is resistance directly proportional to radius?

This means that the resistance of the wire and radius of the wire is inversely proportional to each other. Therefore, as the radius increases, the resistance of wire decreases.

What will happen to the resistance of the wire if the diameter of the wire 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.

## On what factors specific resistance depends?

Answer: The specific resistance of a wire depends on the temperature and the material that is used in the wire.

## How does the resistance of a wire depend on a cross-sectional area?

Resistance is inversely proportional to area of cross section. larger will be the area lower will be the resistance and vice versa. this is because through a conductor with large area of cross section current can easily flow and hence resistance is low.

How does the resistance of a wire depends on its area of cross-section?

### What are four things affect the resistance of a wire?

LENGTH OF WIRE

• THICKNESS OF WIRE
• TEMPERATURE
• TYPE OF METAL
• ### What affects the resistance of a wire?

There are four factors that affect the resistance of a wire: This means that the ‘electric slope’ that makes the electrons move gets less steep as the wire gets longer, and the average drift velocity of electrons decreases. The correct term for this ‘electric slope’ is the potential gradient.

How do you calculate the resistance of a wire?

Theoretically it is using the formula R=Ro*l/A where R is the resistance of the wire,l is its length and A is the area of cross section. Ro is the resistivity. Ro=R*A/l. If you want to measure resistivity practi ally, you have to first find the resistance of the wire using ‘metre bridge’ technique.

#### What increases resistance in a wire?

Decreasing the resistivity of the material the wire is composed of will increase the resistance of the wire. Increasing the resistivity of the material the wire is composed of will increase the resistance of the wire. Increasing the length of the wire will increase the resistance of the wire.