What is the new resistance of a wire which is stretched to three times its original length given that the original resistance of the wire was 10 Ω?

As we know that the volume of the wire remains same. so, the new resistance increases nine fold.

When a wire is stretched to three times its resistance becomes?

Assertion : When a wire is stretched to three times its length, its resistance becomes 9 times. Reason: Resistance is directly proportional to length of wire.

What will the wire’s resistance be if it is stretched to be 3 times its original length but its volume stays the same?

When wire is stretched 3 times of its original length, its resistance will increase 9 times, because when length increases radius decreases i.e. area decreases. But volume i.e. area × length remains same .

What is the new resistance of wire is stretched two times of its original?

As the length of wire gets doubled, the cross-sectional area will become half of its previous value because volume of wire remains constant. Hence, we can see that the new resistance is four times the previous resistance.

What will be the new resistance of the wire if the length of the wire is tripled by stretching it?

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.

What happens if length is doubled?

From the equation, we understand that resistance is directly proportional to the length of the conductor and inversely proportional to the crossectional area of the conductor. Doubling the length doubles the resistance.

What is the resistance when A wire has A resistance of 10 Ohm its length is now doubled and the cross sectional area is halved?

resistance of wire will be 40Ω.

When A wire of resistance 5 ohm is stretch to double it’s length keeping the volume same the new resistance is?

the resistance will increase by 4 times since length is doubled by stretching therefore area remaining would be half.

What is the resistance of a 20 ohm wire?

The resistance of wire is 20 ohm. The wire is stretched to three times of its length. Then the resistance will be : – 12th

What is the resistance when a wire is stretched three times?

The resistance of wire is 20 ohm. The wire is stretched to three times of its length. Then the resistance will be :- When length l increases three times, the cross section A will decease three times of previous. So length becomes 3l and cross section becomes A/3.

What happens when you stretch a wire to make it longer?

1 Answer. 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.

What happens to resistance when length is increased by 3 times?

Practical – When length is increased the area decreases by 3 times — since volume is fixed When Area becomes A/3 , The resistance increase by three times and becomes 60 x 3 = 180 Ohms , M.Tech,MBA,AMIE,C.Eng,CEM.