Electrostatics

Question: Four charges $+ Q,\, - Q,\, + Q,\, - Q$ are placed at the corners of a square taken in order. At the centre of the square

1) $E = 0,\,V = 0$

2) $E = 0,\,V \ne 0$

3) $E \ne 0,\,V = 0$

4) $E = 0,\,V \ne 0$

Solution:

Explanation: Explanation

electric-field-potential

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