Figure shows crosssection view of a infinite cylindrical wire with a cavity, current density is uniform `vec(j)=-j_(0)hat(k)` as shown in figure A. magnetic field inside cavity is uniformB. magnetic field inside cavity is along `vec(a)`C. magnetic field inside cavity is perpendicular to `vec(a)`D. If an electron is projected with velocity `v_(0)hat(j)` inside the cavity it will move undeviated.

Figure shows crosssection view of a infinite cylindrical wire with a c

1.	Figure shows crosssection view of a infinite cylindrical wire with a cavity, current density is uniform `vec(j)=-j_(0)hat(k)` as shown in figure A. magnetic field inside cavity is uniformB. magnetic field inside cavity is along `vec(a)`C. magnetic field inside cavity is perpendicular to `vec(a)`D. If an electron is projected with velocity `v_(0)hat(j)` inside the cavity it will move undeviated.
Answer» Correct Answer - A::C::D Magnetic field is given by `vec(B) =(mu_(0)(vec(j)xxvec(a)))/2`

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