Resistivity is a material-specific property that measures how strongly a material opposes the flow of electric current. The resistance of a conductor is directly proportional to its resistivity. Materials with low resistivity (like copper) have lower resistance, while materials with high resistivity (like rubber) have higher resistance.
What is resistivity, and how does it affect resistance?admin2024-11-13T01:31:24+05:30
For most conductors (such as metals), resistance increases with an increase in temperature due to more frequent collisions between electrons and atoms. However, some materials, like semiconductors, may exhibit decreased resistance with increasing temperature.
How does temperature affect the resistance of a conductor?admin2024-11-13T01:31:03+05:30
A thicker wire has a larger cross-sectional area, which provides more space for the flow of electric current, reducing the resistance. Resistance is inversely proportional to the cross-sectional area.
Why does a thicker wire have less resistance than a thinner wire?admin2024-11-13T01:30:45+05:30
If a component in a series circuit fails (e.g., if a bulb burns out), the entire circuit is interrupted, and current stops flowing through all components.
How does the length of a conductor affect its resistance?admin2024-11-13T01:30:08+05:30
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