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Question

The gravitational field in a region is given by E=(2^i+3^j)N/kg. The equation of the line on which no work is done by the gravitational when the particle is moved

A
2y + 3x =5
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B
5y + 2x =3
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C
3y +2x = 5
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D
3y + 5x = 2
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Solution

The correct option is C 3y +2x = 5
The work done is zero along the equi-potential line which is normal to the electric field.

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