wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A charge Q is distributed uniformly along a rod of lengths L. The electric field at a distance ‘d’ along its axis from its closer end will be


A
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

None of these

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B


Alright! So the electric field due to a line of charge of length L at a point on its axis, at a distance r from the Centre of the rod is

E=KQr2L2/4

If you don’t remember this then it’s okay! You don’t have to mug stuff up. I recommend you to watch try the derivation once and then watch the derivation video once again!

here the value of r is d + L2 (as r is the distance from the Centre). Substituting that in the aforementioned equation we get

E=KQd2+dL


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Electric Field Due to a Line of Charge Along the Axis
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon