Statement (I): Specific resistance depends on nature of material and independent of temperature of the material.
Statement (II): A wire of resistance 
is drawn out so that its new length is four times its original length. The resistance of the new wire is 
.
Statement (III): Drift velocity is the average constant velocity acquired by free electrons inside a metal by the application of an electric field which results in current.
Which of the following is correct?
Text Solution
Verified by ExpertsC
Specific resistance depends both on temperature and nature of material.
So (I) is incorrect.
When length becomes ' n ' time, resistance becomes 
times. So new resistance will be 
So (II) is incorrect.
Drift velocity is average velocity with which free electron get drifted in direction of electric field.
So (III) is correct.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems