define one. ohm.? and. what is resistivity.?
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Explanation:
1 Ohm is the resistance of a conductor through which 1 ampere of current flows with 1 volt of electric potential difference applied across it. 1 Ohm metre may be defined as the resistivity of a material whose resistance is 1 ohm, length is 1 metre and area of cross section is 1 metre square.
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- Rubber, which is a good insulator, has a very high resistance.
It is measured in ohms.
An object having a resistance of 1 ohm means 1 ampere of current is flowing through 2 points having a potential difference of 1 volt.
- Resistivity is the property of the material which defines the resistance of the material having specific dimension.
- Resistance is a measure of the opposition to current flow in an electrical circuit.
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