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Question

Electric potential at any point is V=5x+3y+15z, then the magnitude of electric field is __________ N/C

A
32
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B
42
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C
7
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D
52
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Solution

The correct option is C 7
V=5x+3y+15z

E=Vx^iVy^jVz^k

Now Vx=5

Vy=3

Vz=15

E=5^i3^j15^k

E=52+(3)2+(15)2

E=25+9+15

E=7N/C

Answer-(C)

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