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Magnetic Field

A charged par...

Question

A charged particle is moving in a magnetic field, match the different quantities of a particle in entries of column I with the entries of column II.

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Solution

Work done by magnetic force is zero. From work-energy theorem, its speed or kinetic-energy is constant.

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Q. A charged particle with some initial velocity is projected in a region where non-zero electric and/or magnetic fields are present. In column I, information about the existence of electric and/or magnetic field and direction of initial velocity of charged particle are given, while in Column II the probable path of the charged particle is mentioned. Match the entries of Column I with the entries of Column II

Q. A charged particle with some initial velocity is projected in a region where non-zero electric and/or magnetic fields are present. In column I, information about the existence of electric and/or magnetic field and direction of initial velocity of charged particle are given; while in Column II, the probable path of the charged particle is mentioned. Match the entries of Column I with the entries of Column II.

\begin{matrix} Colum I & Colum II i. & \to E = 0, \to B \neq 0 and initial velocity may & a. & Straight line be at any angle with \to B . ii. & \to E = 0, \to B = 0 and initial velocity may & b. & Parabola be at any angle with \to E . iii & \to E \neq 0, \to B \neq 0, \to E | | \to B and initial velocity is & c. & Circular ⊥ to both. d. & Helical path \end{matrix}

Q. The velocity-time graph of a particle moving along X-axis is shown in figure. Match the entries of Column I with entries of Column II.

Q. A charged particle with some initial velocity is projected in a region where non-zero electric and/or magnetic fields are present. In column I, information about the existence of electric and/or magnetic field and direction of initial velocity of charged particle are given; while in Column II, the probable path of the charged particle is mentioned. Match the entries of Column I with the entries of Column II.

\begin{matrix} Colum I & Colum II i. & \to E = 0, \to B \neq 0 and initial velocity may & a. & Straight line be at any angle with \to B . ii. & \to E = 0, \to B = 0 and initial velocity may & b. & Parabola be at any angle with \to E . iii & \to E \neq 0, \to B \neq 0, \to E | | \to B and initial velocity is & c. & Circular ⊥ to both. d. & Helical path \end{matrix}

	Column I		Column II
I.	The practical A is	a.	accelerating
II.	The particle B is	b.	decelerating
III.	The particle C is	c.	speeding up
IV.	The particle D is	d.	slowing down

Figure shows the position-time graph of particle moving along a straight line. Match the entries of Column I with the entries of Column II.

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