A uniform magnetic field exists in the plane of paper Electron Proton ...
On applying Fleming’s left-hand rule we find that both electron as well as proton experience forces pointing into the plane of paper.
View all questions of this test
A uniform magnetic field exists in the plane of paper Electron Proton ...
The force on charge "q" kept in a uniform magnetic field "B" is given by, F = q (v × B). Let i,j,k be the unit vectors along x,y,z axes respectively. Now for both proton and electron B = Bj
• For the proton, v = vi
F = q (vi × Bj)
= qvB (-k) (since i × j = -k)
• For the electron, v = v(-i)
F = (-q)(v(-i) × Bj)
= -(qvB) k (since -i × j = k)
= qvB (-k)
So, the forces acting on proton and electron are both same in magnitude and direction. Also, the force is into the plane of paper (or) -ve z direction.
A uniform magnetic field exists in the plane of paper Electron Proton ...
Ғᴏʀ ᴛʜᴇ ɢɪᴠᴇɴ ғɪɢᴜʀᴇ, ᴛʜᴇ ᴘʀᴏᴛᴏɴ ᴀɴᴅ ᴇʟᴇᴄᴛʀᴏɴ ᴀʀᴇ ᴍᴏᴠɪɴɢ ɪɴ ᴏᴘᴘᴏsɪᴛᴇ ᴅɪʀᴇᴄᴛɪᴏɴs ᴛᴏ ᴇᴀᴄʜ ᴏᴛʜᴇʀ ᴀɴᴅ ɪs ᴘᴇʀᴘᴇɴᴅɪᴄᴜʟᴀʀ ᴛᴏ ᴛʜᴇ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏғ ᴍᴀɢɴᴇᴛɪᴄ ғɪᴇʟᴅ.---------------
ɴᵒʷ, ʷᵉ ᵏⁿᵒʷ ᵗʰᵃᵗ ᵗʰᵉ ᵈⁱʳᵉᶜᵗⁱᵒⁿ ᵒᶠ ᶜᵘʳʳᵉⁿᵗ ⁱˢ ᵗᵃᵏᵉⁿ ᵒᵖᵖᵒˢⁱᵗᵉ ᵗᵒ ᵗʰᵉ ᵈⁱʳᵉᶜᵗⁱᵒⁿ ᵒᶠ ᵐᵒᵗⁱᵒⁿ ᵒᶠ ᵉˡᵉᶜᵗʳᵒⁿ------------------
sᴏ, ʙᴏᴛʜ ᴇʟᴇᴄᴛʀᴏɴ ᴀɴᴅ ᴘʀᴏᴛᴏɴ ʜᴀᴠᴇ ᴄᴜʀʀᴇɴᴛ ɪɴ sᴀᴍᴇ ᴅɪʀᴇᴄᴛɪᴏɴ. ᴛʜᴇʀᴇғᴏʀᴇ, ᴛʜᴇ ғᴏʀᴄᴇs ᴀᴄᴛɪɴɢ ᴏɴ ᴛʜᴇᴍ ᴀʀᴇ ɢɪᴠᴇɴ ʙʏ ғʟᴇᴍɪɴɢ s ʟᴇғᴛ ʜᴀɴᴅ ʀᴜʟᴇ ᴀɴᴅ ᴛʜᴇʏ ᴀʀᴇ ᴘᴏɪɴᴛɪɴɢ ɪɴᴛᴏ ᴛʜᴇ ᴘʟᴀɴᴇ ᴏғ ᴛʜᴇ ᴘᴀᴘᴇʀ.
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.