- #1
Saitama
- 4,243
- 93
Homework Statement
The equation of an equipotential line in an electric field is y=2x, then the electric field strength vector at (1,2) may be
a)4i+3j
b)4i+8j
c)8i+4j
d)-8i+4j
Homework Equations
The Attempt at a Solution
Since its an equipotential line, the electric field vector should perpendicular to this line. Therefore, the slope of line perpendicular to y=2x is -1/2. The equation should be y=[itex]\frac{-1}{2}[/itex]x+k, where k is any constant. Now i am stuck, can somebody help me proceed in the right direction?