AIPMT PRELIMS2007Physics-Electric Charges and Fields
AIPMT PRELIMS 2007 Physics Electric Dipole MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Three point charges +q, –q and +q are placed at points (x = 0, y = a, z = 0), (x = 0, y = 0, z = 0) and (x = a, y = 0, z = 0) respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are
A
√2qa along the line joining points (x = 0, y = 0, z = 0) and (x = a, y = a, z = 0)
B
qa along the line joining points (x = 0, y = 0, z = 0) and (x = a, y = a, z = 0)
C
√2qa along +ve x direction
D
√2qa along +ve y direction
Correct Answer
Option A
Detailed Explanation
The dipole moment is a vector quantity given by the product of charge and the distance between the charges. Here, the charges form a right triangle, and the resultant dipole moment is along the hypotenuse.
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