f. Mention two important factors on which resistance depends upon.
g. What types of charges are responsible for conduction of electricity in a metallic conductor?
h. Why resistance of a metallic conductor increases with increase of temperature?
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f.two important factors on which the resistance depends is 1.length of conductor:
R is directly proportional to the length of the wire.
2.nature of conductor:
different substances have different concentrations of free electrons and therefore the resistance of a conductor depend on it's material...
g.there are two types of electric charge
+ve charge: it is the charge carried out by proton.
-ve charge : it is the charge carried out by electron.
electrons (-ve charge)are responsible for conduction in metallic conductor
h.with the increase in temperature of conductor,the random motion of electrons increases .As a result,the number of collisions increases .Therefore ,the resistance of a conductor increases with an increase in it's temperature.
R is directly proportional to the temp.
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