A-LevelPhysicsElectric fields9702/12 · May/June 2015 · Q291 Mark
A positive charge and a negative charge of equal magnitude are placed a short distance apart. Which diagram best represents the associated electric field?
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A[Diagram A: Electric field lines originating from a positive charge and terminating on a negative charge, with incorrect direction arrows near the positive charge.]
B[Diagram B: Electric field lines originating from a positive charge and terminating on a negative charge, with correct direction arrows (away from positive, towards negative), forming a dipole field.]
C[Diagram C: Electric field lines as concentric circles around each charge.]
D[Diagram D: Electric field lines as parallel vertical lines between charges, resembling a parallel plate capacitor, with curved lines outside.]
✓ Correct answer
B: [Diagram B: Electric field lines originating from a positive charge and terminating on a negative charge, with correct direction arrows (away from positive, towards negative), forming a dipole field.]
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