2
Question
In a uniform electric field, equipotential surfaces must :
In a uniform electric field, equipotential surfaces must :
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Solution
The correct options are
A be plane surfaces
B be normal to the direction of the field
C be spaced such that surfaces having equal differences in potential are separated by equal distances
D have decreasing potentials in the direction of the field
Uniform field means a constant field at every point and it is directed in a fixed direction for all points. Thus equipotential surfaces must be plane surface. The electric field is always perpendicular to equipotential surface because →E=−→∇V. As surfaces are equipotential so it must be spaced such that surfaces having equal differences in potential are separated by equal distances. As E=−dVdr so it must have decreasing potentials in the direction of the field.
A be plane surfaces
B be normal to the direction of the field
C be spaced such that surfaces having equal differences in potential are separated by equal distances
D have decreasing potentials in the direction of the field
Uniform field means a constant field at every point and it is directed in a fixed direction for all points. Thus equipotential surfaces must be plane surface. The electric field is always perpendicular to equipotential surface because →E=−→∇V. As surfaces are equipotential so it must be spaced such that surfaces having equal differences in potential are separated by equal distances. As E=−dVdr so it must have decreasing potentials in the direction of the field.
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