Table of Contents
What has a lower resistance?
Electricity can flow through nonmetals as well (e.g., wood, plastic, rubber and glass), but resistance is much lower in metals such as silver and gold. Even though gold and silver have low resistances, they are too expensive in most cases to be applied in any form other than plating.
Which is the least resistance material?
Element silver has lowest resistivity and hence has higher conductivity. Resistivity – Resistivity is equal to the resistance of a given conductor having a unit volume.
Which conductor has lowest resistance?
Resistivity. A silver wire has a lower resistance than a lead wire*. Resistivity is a characteristic of a substance (like density) and can be found in tables like the one below.
What metal has the least amount of resistance?
Silver is the best conductor because it has the least resistance to the flow of electricity.
Does length of wire affect resistance?
The resistance of a long wire is greater than the resistance of a short wire because electrons collide with more ions as they pass through. The relationship between resistance and wire length is proportional .
What 4 factors affect the resistance of a wire?
There are 4 different factors which affect resistance:
- The type of material of which the resistor is made.
- The length of the resistor.
- The thickness of the resistor.
- The temperature of the conductor.
What has the highest resistivity?
Nichrome has the highest resistivity and shows the heating effect of electric current because of its high resistance, it opposes the flow of current and hence, it produces a lot of heat.
Does copper have high resistance?
Copper has a lower resistivity and is a better conductor of electricity than iron. Copper is a better conductor than iron, which means current can flow easier (with less resistance) through copper. This is an inherent property of a material.
How can you reduce the resistance of a wire?
Changing the material, increasing the cross section area, lowering the temperature, and using a thicker wire are some of the ways to reduce resistance.
Which wire has more resistance thick or thin?
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.
Does type of metal affect resistance?
Factors That Affect Resistance How much resistance a material has depends on several factors: the type of material, its width, its length, and its temperature.
What increases the resistance of a wire?
Ohm’s Law and resistance length – longer wires have greater resistance. thickness – smaller diameter wires have greater resistance. temperature – heating a wire increases its resistance.