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When a charged particle moves perpendicu...

When a charged particle moves perpendicular to a magnetic field, then:

A

speed of the particle is changed

B

speed of the particle remains unchanged

C

direction of the particle remains unchanged

D

acceleration of the particle remains unchanged

Text Solution

Verified by Experts

magnetic force acts perpendicular to the direction of motion of the charged particle and as such thi s peed of the particle remairs unchanged
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Knowledge Check

  • Assertion When a charged particle moves perpendicular to a uniform magnetic field then its momentum remains constant. Reason Magnetic force acts perpendicular to the velocity of the particle.

    A
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
    B
    If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
    C
    If Assertion is true but Reason is false.
    D
    If Assertion is false but Reason is true.

  • Which of the following statement(s) is/are correct? If a charged particle moves In a region of magnetic field such that velocity of charged particle v is perpendicular to magnetic field B, then trajectory of the particle is a circle. II. Force acting on the charged particle is q (vxxB).

    A
    Both I and II are correct
    B
    Both I and II are Incorrect
    C
    I Is correct and II Is Incorrect
    D
    I Is Incorrect and II Is correct

  • When a charged particle moves in an elecltric or a magnetic field, its speed is v and acceleration is a

    A
    In a magnetic field `v` is constant if the particle moves in a circular path, and variable if it moves in a helical path.
    B
    In a magnetic field, `v` is always constant `a` may or may not ber zero
    C
    In an electric field, `v` can never remain constant.
    D
    In a uniform electric field, `a` must be constant in magnitude and direction.

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