Discussion Forum : Electric Charges Fields And Gauss Law
Question -


Four charges are arranged at the corners of a square ABCD , as shown in the adjoining figure. The force on the charge kept at the centre O is                                                 
Four Charges Are Arranged At The Corners Of A Square ABCD , ...

Options:
A .   Zero
B .   Along the diagonal AC
C .   Along the diagonal BD
D .   Perpendicular to side AB
Answer: Option C
:
C

We put a unit positive charge at O. Resultant force due to the charge placed at A and C is zero and resultant charge due to B and D is towards D along the diagonal BD.



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