A clock face has negative charges -q,-2 ...

A clock face has negative charges `-q,-2 q,-3 q, ....,-12 (q)` fixed at the position of the corresponding numerals on the dial. The clock hands do not disturb the net field due to point charges, At time `x: 30`, the hour hand point in the same direction of electric field at the centre of the dial. Find `x`.

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