A current i ampere flows along an infinitely long straight thin walled tube, then the magnetic induction at any point inside the tube is

  • Option 1)

    infinite

  • Option 2)

    zero

  • Option 3)

    \frac{\mu _{0}}{4\pi }.\frac{2i}{r}\, tesla

  • Option 4)

    \frac{2i}{r}\, tesla

 

Answers (1)
V Vakul

As we learnt in

Magnetic field inside thin hollow cylinder -

B=0

- wherein

 

 

 

 

Magnetic field will be zero inside the straight thin walled tube according to ampere's theorem.


Option 1)

infinite

Incorrect option

Option 2)

zero

Correct option

Option 3)

\frac{\mu _{0}}{4\pi }.\frac{2i}{r}\, tesla

Incorrect option

Option 4)

\frac{2i}{r}\, tesla

Incorrect option

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