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Asked by eknathmote50 | 02 Jun, 2019, 14:24: PM
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Electirc field direction is perpendicular to equi-potential line.
 
Since equi-potential line is along  y = 2x,  electric field line is in the direction of line 2y = - x as shown in figure.
 
Possible vector in the direction of line 2y = -x is - 8 i + 4 j 
Answered by Thiyagarajan K | 02 Jun, 2019, 16:55: PM

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