Table of Contents
- 1 What happened to the resistance of a wire if it is made thinner?
- 2 What happens to the resistance when the wire is made thicker?
- 3 What happens to resistance of the conductor when temperature is increased?
- 4 What happens when conductors resistance?
- 5 What affects resistance in a wire?
- 6 Why do thinner wires have more resistance?
- 7 What happens to the resistance of a conductor when temperature is decreased?
- 8 How is the resistance of a wire affected if?
What happened to the resistance of a wire if it is made thinner?
So, when the conductor is made thinner, its area of cross-section will decrease, since resistance is inversely proportional to the area of the conductor. Therefore, its resistance will increase.
What happens to the resistance when the wire is made thicker?
The resistance decreases as the conductor is made thicker. The resistance decreases as the conductor is made thicker because resistance is directly proportional to the length of the conductor and inversely proportional to the area of cross-section of the conductor.
How does thickness affect the resistance?
The longer a wire is the more resistance it has due to the longer path the electrons have to flow along to get from one end to the other. The larger the cross sectional area, the lower the resistance since the electrons have a larger area to flow through. This will continue to apply no matter how thick the wire is.
What happens to resistance of the conductor when temperature is increased?
The resistance of a conductor increases with an increase in temperature because the thermal velocity of the free electrons increases as the temperature increases. This results in an increase in the number of collisions between the free electrons.
What happens when conductors resistance?
Since the resistance of some conductor, such as a piece of wire, depends on collisions within the wire itself, the resistance depends on temperature. With increasing temperature, the resistance of the wire increases as collisions within the wire increase and “slow” the flow of current.
What happens to the resistance of a wire if you double the thickness of the wire?
when the thickness is increased the Resistance of wire will come down.
What affects resistance in a wire?
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. See resistivity. The resistance of a conductor, or circuit element, generally increases with increasing temperature.
Why do thinner wires have more resistance?
The relationship between resistance and wire length is proportional . The resistance of a thin wire is greater than the resistance of a thick wire because a thin wire has fewer electrons to carry the current. The relationship between resistance and the area of the cross section of a wire is inversely proportional .
How does temperature affect the resistance of a wire?
Heating the metal conductor causes atoms to vibrate more, which in turn makes it more difficult for the electrons to flow, increasing resistance.
What happens to the resistance of a conductor when temperature is decreased?
The specific resistance of a conductor is directly proportional to temperature. It means that if the temperature increases then resistance also increase and if the temperature decreases than resistance also get decreases..
How is the resistance of a wire affected if?
(a) Resistance of a wire is directly proportional to the length of a wire; so if the length is doubled, resistance is also doubled. Thus, if radius is doubled, area increases four times and hence the resistance becomes one-fourth.
What happens to the resistance of a conductor when Nichrome wire is replaced by copper wire?
When the nichrome wire is replaced by a thicker one of same material and length, the current in the wire increases which means that the resistance of the thicker wire (3) is less than that of the thinner wire (1).