1.What’s the difference between intrinsic and extrinsic properties of a material
ID: 1543624 • Letter: 1
Question
1.What’s the difference between intrinsic and extrinsic properties of a material?
2. We give a relation between dissipated power in, voltage across, and current through, a resistor. Ohm’s Law gives a relationship between the voltage, current, and resistance. Express dissipated power in terms of the voltage and resistance; in terms of the current and resistance.
3. A perfect conductor has zero resistivity, while a real conductor has a finite, but near zero resistivity. What resistivity should a perfect insulator have? Should a real insulator have a very large or very small resistivity?
Explanation / Answer
Intrinsic properties are those properties that are independent of the amount of matter e.g density,temperature,pressure.
Extrinsic properties are those properties that are proportional to the amount of matter e.g weight,volume,heat capacity.
From Ohm's law voltage through a resistor R is V = IR , where I is the current through the resistor.
power dissipated in P=I*V
=(V/R)*V
=(V^2)/R
again we can write P = I*V = (I^2)*R
Perfect insulator have infinite resistivity.
Real insulator have a very large resistivity.
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