1.

Four charges are placed on corners of a square as shown in figure having side of \[5\,cm\]. If Q is one microcoulomb, then electric field intensity at centre will be        [RPET 1999]

A.                    \[1.02\times {{10}^{7}}N/C\] upwards
B.                    \[2.04\times {{10}^{7}}N/C\] downwards
C.                    \[2.04\times {{10}^{7}}N/C\] upwards
D.                    \[1.02\times {{10}^{7}}N/C\] downwards
Answer» B.                    \[2.04\times {{10}^{7}}N/C\] downwards


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