Q.

A current I flows along length of an infinitely long, straight, thin walled pipe. Then

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

the magnetic field at all points inside the pipe is the same but not zero. 

b

the magnetic field at any point inside the pipe is zero. 

c

the magnetic field is zero only on the axis of the pipe. 

d

the magnetic field is different at different points inside the pipe.

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

From Ampere's law, we have

B·dl=μ0I

Since no current exists in the medium (air) inside the pipe, I= 0. Hence B = 0. 

Watch 3-min video & get full concept clarity

hear from our champions

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon