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

Four charges are arranged at the corners of a square as shown in the figure. The direction of electric field at the centre of the square is along :
468016_8fef4e90592f4096a713f296d2124d5e.png

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

The correct option is A DC
We can put an imaginary charge Q at the center of the square and look at the forces acting on it due to the four charges.
Let the distance of each charge from the central charge is same.
Thus the magnitude of the force is proportional to the charge.
Force due to charge +q is a^ia^j
Force due to charge +2q is 2a^i2a^j
Force due to charge +3q is 3a^i+3a^j
Force due to charge +4q is 4a^i+4a^j
Thus net force on the charge=4a^j
Thus the net direction of electric field at center is along DC.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Coulomb's Law - Grown-up Version
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon