Q. A stream of electrons is projected horizontally to the right. A straight conductor carrying a current is supported parallel to electron stream and above it. If the current in the conductor is from left to right, then what will be the effect on electron stream?
A) The electron stream will be speeded up towards the right
B) The electron stream will be retarded
C) The electron stream will be pulled upward
D) The electron stream will be pulled downward
Explanation
(d) Magnetic field due to current through a linear conductor from the left to right at a point below the conductor is acting horizontally upwards. The electron beam moving from left to right will cause current right to left. The force on the electron will be vertically downwards according to Fleming’s hand rule.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.