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What would happen if the length of wire increase what happens to the resistance?
resistance is directly proportional to wire length and inversely proportional to wire cross-sectional area. In other words, If the wire length is doubled, the resistance is doubled too. If the wire diameter is doubled, the resistance will reduce to 1/4 of the original resistance.
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Its resistance increases. This is because of vibrations of the core of atoms and so they have got good influence over the movement of electrons. So conductivity gets reduced a…nd so resistance increases. This is what we call positive temperature coefficient
the current decreases
If you mean the length of the wire that supplies current to the bulb, the bulb will dim due to increased resistance in the wire, if you make it longer.
Actually resistance is directly proportional to the length provided area remains constant. But as we stretch the wire only its volume would remain constant. So its area is to …be decreased as length increases. V = pi r^2 * L Now we have R = K * L / pi r^2 Multiplying numerator and denominator by L we get R = K/V * L^2 So resistance is found to be proportional to square of length Hence as length gets increased by 2 times, its resistance value would increase by 4 times.
When we increase the resistance the voltage is also increases.........
Assuming that there is a potential difference across the conductor, then the value of the current will fall (I = E/R).
-- A piece of wire behaves like a resistor. Granted, its resistance is very small, but it has some. -- Another piece of wire behaves like another resistor. Granted, its r…esistance is also very small, but it has some. -- When you twist one end of each piece of wire together, you get a longer wire. Also, electrically, you have connected two resistors in series. As you know, the total resistance of resistors connected in series is the sum of the individual resistances, and is greater than either single resistance alone.
Suppose a wire of resistance R could be stretched uniformly until it was twice its original length. What would happen to its resistance?
Current tends to travel on the surface of the wire. As you decrease the cross-sectional area of a wire the resistance increases. That is why larger wires are rated for higher …currents.
Nothing. Resistivity is a physical characteristic of a material. It's not affected by its shape, etc.
the resistance can never increase or decrease....... (you can't open the resistor and take out the something and make the resistance increase or decrease) Since resist…ance is directly proportional to the length of a conductor, increasing the length of a wire will increase its resistance. For example, if you double its length, you will double its resistance.
as with any electrical system if resistence is increases then current and voltage will be reduced.
When the length of the wire increases voltage drop across the wire will occur. There are two factors that can result in voltage drop. One diameter of the wire, two length of …the wire. Voltage drop increases with increase in length of wire, whereas voltage drop decreases with increase in diameter (cross section area) of the wire. G.RAO Answer If you are asking what happens to the voltage across a length of wire when its length increases, the answer is nothing happens! The voltage applied to the wire is determined by the supply, not by the load (i.e. the wire).
Wire has a specific resistance per distance. So if you increase the distance, the resistance of that particular wire will be greater.
The insulation resistance remains the same throughout the entire length of the conductor.
An increase in current will only affect resistance if it causes the temperature of the conductor to change. For pure metallic conductors, and increase in temperature will caus…e an increase in resistance.
Nothing. Resistivity is independent of a conductors size or shape.