Answer :

a) The solution to this question is intuitive.


The made at center for pentagon is,


Θ=72°


And the force is always perpendicular to the line joining the wire and the point to be calculated at e.g. OB.


So the force vector is at 90° from OB.


This makes an angle of 18° with OA.


Hence after finding out all the forces we are going to end up in a pentagon (HIJGF) with a shift of 18°.


So, the force at center is 0.


Wires are taken to be infinitely long


b) When we eliminate one wire then;





This is the magnetic induction when one wire is eliminated.


c)



If one wire is revised, then



=


= along FH


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
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
RELATED QUESTIONS :

A. Obtain the expPhysics - Board Papers

A charged particlPhysics - Exemplar

Describe the motiPhysics - Exemplar

State the underlyPhysics - Board Papers

In a cyclotron, aPhysics - Exemplar

A magnetic field NCERT - Physics Part-I