If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be - VgyanHub

Question:

If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be

Options :

(a) Only inside the pipe
(b) Only outside the pipe
(c) Neither inside nor outside the pipe
(d) Both inside and outside the pipe

Answer :

(b) Only outside the pipe

Answer Steps :

step 1:

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