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Electric Field due to a Dipole - 2 Video Lecture - NEET

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FAQs on Electric Field due to a Dipole - 2 Video Lecture - NEET

1. What is an electric dipole?
Ans. An electric dipole is a pair of equal and opposite charges separated by a small distance. It is characterized by its dipole moment, which is the product of the magnitude of the charge and the separation between them.
2. How is the electric field due to a dipole calculated?
Ans. The electric field due to a dipole at a point in space can be calculated by using the formula: E = (1/4πε₀) * (2p/r³) * cosθ, where E is the electric field, ε₀ is the permittivity of free space, p is the magnitude of the dipole moment, r is the distance from the point to the dipole, and θ is the angle between the dipole axis and the line connecting the dipole to the point.
3. What is the direction of the electric field due to a dipole?
Ans. The electric field due to a dipole points along the line passing through the dipole from the negative charge to the positive charge. It is directed away from the positive charge and towards the negative charge.
4. How does the electric field due to a dipole vary with distance?
Ans. The electric field due to a dipole follows an inverse cube law with distance. As the distance from the dipole increases, the magnitude of the electric field decreases rapidly. The electric field is strongest near the dipole and becomes weaker as the distance increases.
5. Can the electric field due to a dipole be zero at any point?
Ans. Yes, the electric field due to a dipole can be zero at points along the equatorial plane of the dipole. At these points, the electric field contributions from the positive and negative charges cancel each other out, resulting in a net electric field of zero.
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