The electric field acts along positive 
‐axis. A charged particle of charge 
and mass 
is released from origin and moves with velocity 
under the action of electric field and magnetic field, 
. The velocity of particle becomes 
after time 
. Find the electric field:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
is perpendicular to both 
and 
Path of particle is helix with increasing pitch
Here, 
and 
Also 
(given)
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A current loop is placed in a uniform magnetic field in four different orientations, I, II, III and…
In hydrogen atom, the electron is making6 around the nucleus in an orbit of radius 0.528 A. The ma…
The magnetic moment of a current carrying loop is . The magnetic field at a point on its axis at a…
Current flows through the circuit, as shown. Find the magnetic moment of the figure, if :
The magnetic field due to a small current element at a distance and element carrying current is,
A particle carrying a charge equal to 100 times the charge on an electron is rotating per second in…