An electric dipole has the magnitude of its charges as \(q\) and its dipole moment is \(p\). It is placed in a uniform electric field \(E\). If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively:
1. \(q\cdot E\) and \(p\cdot E \)
2. zero and minimum
3. \(q\cdot E\) and maximum
4. \(2q\cdot E\) and minimum 
Subtopic:  Energy of Dipole in an External Field |
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AIPMT - 2004
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