CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

A current I flows in a long thin walled cylinder of radius R. What pressure do the walls of the cylinder experience?


  1. μ0I8πR
     

  2. μ0I28π2R2
     

  3. μ0I216πR2
     

  4. μ0I4π2R
     


Solution

The correct option is B

μ0I28π2R2
 


The magnetic field outiside the cylinder is μ0I2×2πR
The magnetic fied inside the cylinder is 0
The magnetic field in the inside the conductor is the average of the above two =μ0I4×2πR
The current through a small strip of width dl is given by Idl2πr
Hence, the force acting on it given by F=BiL=μ0I4×2πRIdl2πrL
The area of the strip is given by A=Ldl
Hence the pressure on the strip is given by FA=μ0I28π2R2

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
QuestionImage
QuestionImage
View More...


People also searched for
QuestionImage
QuestionImage
View More...



footer-image