NSEP · Physics · Electrostatics
Field/potential due to point charges, dipoles and continuous distributions.
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Q1 · Electric Field and Potential · MEDIUM
Two point charges +q and -q are placed at a distance 2a apart. What is the electric field at a point on the perpendicular bisector of the line joining the charges at a distance x from the midpoint (where x >> a)?
Q2 · Electric Field and Potential · MEDIUM
Two point charges +4Q and -Q are placed at a distance d apart. At what distance from the charge +4Q along the line joining the two charges will the electric field be zero?
Q3 · Electric Field and Potential · MEDIUM
Two point charges +4 μC and -4 μC are placed at points A(0, 0, 0) and B(2, 0, 0) respectively, where coordinates are in meters. What is the magnitude of electric field (in N/C) at point P(1, 1, 0)? (Take 1/(4πε₀) = 9 × 10⁹ N·m²/C²)
Q4 · Electric Field and Potential · EASY
A uniform electric field E = 5 × 10³ N/C exists in a region pointing in the positive x-direction. A point charge q = -2 μC is moved from point A (0, 0, 0) to point B (3 m, 4 m, 0). The work done by the electric field is: