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If a charged particle goes unaccelerated in a region containing electric and magnetic fields,

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A charged paricle goes undeflected in a region containing electric and magnetic field. It is possible that

Assertion If the path of a charged particle in a region of uniform electric and magnetic field is not a circle, then its kinetic energy may remain constant. Reason In a combined electric and magnetic field region a moving charge experiences a net force F=qE+q(VxxB), where symbols have their usual meanings.

Knowledge Check

  • A changed particle goes undeflected in a region containing electric and magnetic field. It is possible that

    A
    `barV|\ |barB` and `barE` is not parallel to `berB`
    B
    `barE|\ |barB` but `berV` is not parallel to `barE`
    C
    `barE|\ |barB` ,`barV|\ |barE`
    D
    `barE|\ |barB` ,`barV bot barE`

  • A charged particle goes undeflected in a region containing uniform electric and magnetic field.It is not possible at all (vecupsilon="velocity of particle", vecE="uniform electric field", vecB="uniform magnetic field")

    A
    `vecE||vecB,vecupsilon||vecE`
    B
    `vecE` is not collinear to `vecB`
    C
    `vecupsilon||vecB`but `vecE` is not collinear to `vecB`
    D
    `vecE||vecB`but `vecupsilon` is not collinear to `vecE`

  • A charged particle moves undeflected in a region of crossed electric and magnetic fields. If the electric field is switched off, the particle has an initial acceleration a . If the magnetic field is switched off, instead of electric field, the particle will have an initial acceleration

    A
    equal to `0`
    B
    `gt a`
    C
    equal to `a`
    D
    `lt a`

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    A charge particle enters into a region containing uniform electric field (E) and uniform magnetic field (B) along x- axis and y-axis respectively.If it passes the region undeviated the velocity of charge particle is given by

    A charge particle enters into a region containing uniform electric field (E) and uniform magnetic field (B) along x-axis and y-axis respectively.If it passes the region undeviated the velocity of charge particle is given by

    A charged particle is released from rest in a region of steady uniform electric and magnetic field which are parallel to each other. The particle will move in a

    A charged particle is released from rest in a region of steady and uniform electric and magnetic fields which are parallel to each other . The particle will remove in a

    A charged particle can be deflected by electric and magnetic filed both The electric force oversetrarrF_(e) =qoversetrarrE and magnetic force oversetrarr(F_(m)) = oversetrarr(qv)xxoversetrarr(B) q = charge in coulomb, oversetrarrV is velocity in m/s oversetrarrE is electric filed strengh in N//C and B is magnetic field strength in tesla (T) If a moving charged particle enters simultaneous electric and magnetic field, the net force on the charged particle is oversetrarr(F) =q(oversetrarrE +oversetrarr(v) xx oversetrarrB) If oversetrarr(F) =0 the charged particle will move undeflected in simultaneous fields If a charged particle moving along x-axis enters the simultaneous electric and magnetic fields at right angles Electric field is along y-axis and magnetic field along z-axis and vgt(E)/(B) the particle will .

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