Q. 75.0( 9 Votes )

How do you verify that resistance of a conductor is proportional to the length of the conductor for constant cross-section area and temperature?

Answer :

A circuit is prepared by using a cell, key, ammeter as shown in below figure.


Iron wires of different lengths but same cross-sectional area were taken. Connect one wire between terminals P and Q. The ammeter reading was noted. The same procedure was repeated for other wires. We will observe that current decreases with increase in the length of wire. Resistance increases with increase in length and current decreases. Thus we can prove resistance of a conductor is proportional to the length of the conductor for constant cross-section area and temperature.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Electric CurrentElectric CurrentElectric Current42 mins
What is Electric Current?What is Electric Current?What is Electric Current?56 mins
Electric Current QuizElectric Current QuizElectric Current Quiz35 mins
Foundation | Electromagnetic InductionFoundation | Electromagnetic InductionFoundation | Electromagnetic Induction42 mins
Lakhmir Singh | Magnetic Effect of Electric Current (Part-1)Lakhmir Singh | Magnetic Effect of Electric Current (Part-1)Lakhmir Singh | Magnetic Effect of Electric Current (Part-1)38 mins
Foundation | IIT JEE-Vector ProductFoundation | IIT JEE-Vector ProductFoundation | IIT JEE-Vector Product54 mins
Champ Quiz | Magnetic Effects of Electric CurrentChamp Quiz | Magnetic Effects of Electric CurrentChamp Quiz | Magnetic Effects of Electric Current37 mins
Quiz | Find the Magnet and its Poles.Quiz | Find the Magnet and its Poles.Quiz | Find the Magnet and its Poles.34 mins
Quiz | Lets Revise Electromagnetic InductionQuiz | Lets Revise Electromagnetic InductionQuiz | Lets Revise Electromagnetic Induction41 mins
Champ Quiz | Feeling Of Electric CurrentChamp Quiz | Feeling Of Electric CurrentChamp Quiz | Feeling Of Electric Current37 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses