Question

define
(1)resistivity,
(2)ohm's law,
(3)electric power
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Answer 1

Answer:

Explanation:

Resistivity : It is defined as the amount of resistance offered by any substance. Its S.I unit is ohm metre.

Ohm's law : It states that the potential difference applied across the ends of the conductor is directly proportional to the current flowing through it

          V= IR

Electric power : It is rate per unit time with which electricity is transfered in a circuit.

Answer 2

Answer:

1) Resistivity, electrical resistance of a conductor of unit cross-sectional area and unit length. A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents. High resistivity designates poor conductors.

2) Ohm’s law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

3)Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.

Explanation:

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