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JAMB - Physics (2001 - No. 44)

The diagram above shows a closed side 0.5m in a uniform electric field E in the direction shown by the arrows. What is the flux Φ for the box?
0.5 E
2.0 E
0.2 E
0.0 E

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0.0 E since one of the electric fields points in the opposite direction (left)

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