What are the factors on which the resistance of a substance depends ? Anyone here ? -_- Answer this _/l_
Dear Student,
The resistance of a substance is dependent on the following factors:
The resistance of a substance is dependent on the following factors:
- Length: Resistance is directly proportional to the length of the conductor. So as the length increases the value of resistance increases.
- Cross-sectional area: Resistance is inversely proportional to the cross-sectional area of the conductor. So as the cross-sectional area increases the value of resistance decreases.
- Resistivity: Resistance depends upon resistivity which is a proportionality constant and depends on the nature of substance and temperature. It is inversely proportional to resistance.
- Temperature: As the temperature increases, the value of resistivity increases and so resistance increases.