Physics
Grade-9
Easy
Question
Using this formula, what can be calculated?
- ρ
- V
- I
- P
Hint:
Resistivity is the resistance of a conductor across a unit cross-sectional area per length.
The correct answer is: ρ
- is used for calculating resistivity of the conductor.
- Resistivity is a property of a material that is useful for comparing the current carrying capacity of the material.
- Here, R= resistance of the conductor ; A = cross-sectional area ; l= length if the conductor
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