wiz-icon
MyQuestionIcon
MyQuestionIcon
13
You visited us 13 times! Enjoying our articles? Unlock Full Access!
Question

Two equal positive charges are kept at points A and B. The electric potential at the points between A and B (excluding these points) is studied while moving from A to B. The potential

A
continuously increases
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
continuously decreases
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
increases then decreases
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
decreases then increases
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D decreases then increases

Let distance between A and B be d

Then potential at any distance x from point A is given by

V=kqx+kq(dx)

V=kq(1x+1(dx))

Now

dV/dx=kqd(2xd)(x(dx))2

therefore for x<d/2

dV/dx<0 therefore potential decreases

and for x>d/2

dV/dx>0 therefore potential increases

Hence first decreases then increases option (D)


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Factors Affecting Resistance & How They Affect_Tackle
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon