Is a copper wire is stretched to make it 0.1\% longer the percentage change in its resistance is?

Hence resistance increase by 0.2\%.

What happens to the resistance of a copper wire after being stretched thinner?

As a wire gets longer its resistance increases, and as it gets thinner its resistance also increases because its cross sectional area decreases. Doubling the length will double the resistance, but the wire also must get thinner as it is stretched, because it will contain the same amount of metal in twice the length.

Is 0.1 increase in length due to stretching the percentage increase in its resistance will be?

Hence change in resistance is 0.1\%. Q1.

What is percentage change in its resistance if radius is increased by 1 \%?

Answer : 25 /16 times initial resistance.

What happens to the resistivity of a wire if it is stretched * 1 point it will increase it will decrease first increases then decreases remains the same?

The Resistivity of the wire will not change with the change in length. Resistivity is a property of the wire, it doesn’t depend upon it’s length or cross-sectional area.

What happens to the resistance of a wire if it is stretched?

Answer: The resistance of a wire is inversely proportional to its area and directly proportional to its length. When the length is tripled then resistance will also become three times. If The wire is stretched 3 times the original length, the cross-section of the wire is cut to 1/3rd it’s the original cross-section.

What happens when a wire is stretched?

When the wire is stretched to double the length , the area of cross section gets reduced to half. So when the wire is stretched, the resistance multiplies by four times. Hope you understood.

What is the resistivity of wire?

Resistivity, commonly symbolized by the Greek letter rho, ρ, is quantitatively equal to the resistance R of a specimen such as a wire, multiplied by its cross-sectional area A, and divided by its length l; ρ = RA/l.

What is the specific resistance of a wire?

Specific resistance of a conductor is the resistance of a conductor of unit length and unit area of cross section. Specific resistance is a property of a material while resistance is not. Step-By-Step answer: Resistance increases with length and decreases with area of cross section, but specific resistance does not.

How do you find percent change in resistance?

1. Stress =1000kg/cm2.
2. Modulus of elasticity=ε= 2×106kg/cm3.
3. Change in Resistance=∆R=Gf×Strain.

When a wire of resistance R is stretched and its radius becomes r 2 then its resistance will be?

Explanation: Initial radius of wire, r1 = r and final radius of wire, r2 = r/2 = 0.5r.

What is the percentage change in resistance when a copper wire is stretched?

> If a copper wire is stretch… If a copper wire is stretched to make it 0.1 \% longer. The percentage change in its resistance is On stretching a wire its length increases but its area of cross section decreases, and volume remains constant.

What happens to the volume of wire when it is stretched?

When wire is stretched, its radius decreases and its length increases. When wire is stretched its radius and cross sectional area changes. But volume of the wire always remains same. V1 and V2 are volume of wire. When wire is stretched, its radius decreases and its length increases.

How to increase the resistance of a DC wire?

I know that DC resistance in wire is proportional to cross sectional area. Since area is proportional to the square of radius, halving the radius must quarter the area, increasing resistance by a factor of four. DC resistance is linearly proportional to length. Making it five times as long increases the resistance by five.