Question

Factors affecting resistance of a material

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Answer 1

Answer:

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.

• All materials have some resistance, but certain materials resist the flow of electric current more or less than other materials do. Materials such as plastics have high resistance to electric current. They are called electric insulators. Materials such as metals have low resistance to electric current. They are called electric conductors.
• A wide wire has less resistance than a narrow wire of the same material. Electricity flowing through a wire is like water flowing through a hose. More water can flow through a wide hose than a narrow hose. In a similar way, more current can flow through a wide wire than a narrow wire.
• A longer wire has more resistance than a shorter wire. Current must travel farther through a longer wire, so there are more chances for it to collide with particles of matter.
• A cooler wire has less resistance than a warmer wire. Cooler particles have less kinetic energy, so they move more slowly. Therefore, they are less likely to collide with moving electrons in current. Materials called superconductors have virtually no resistance when they are cooled to extremely low temperatures.

Answer 2

Answer:

here is ur answer..

Explanation:

There are 4 different factors which affect resistance:

1. The type of material of which the resistor is made.

2. The length of the resistor.

3. The thickness of the resistor.

4. The temperature of the conductor

hopefully it will help you...