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Questions and Answers
What happens to the electric field on the axial line of a dipole as the distance from the dipole increases?
What happens to the electric field on the axial line of a dipole as the distance from the dipole increases?
- Electric field decreases linearly
- Electric field remains constant
- Electric field decreases as inverse cube of distance (correct)
- Electric field increases linearly
What is the formula to calculate the electric field due to a dipole on its axial line?
What is the formula to calculate the electric field due to a dipole on its axial line?
- $E = \frac{1}{4\pi\epsilon_0} \frac{2p}{r^2}$
- $E = \frac{1}{4\pi\epsilon_0} \frac{2p}{r^3}$ (correct)
- $E = \frac{1}{4\pi\epsilon_0} \frac{p}{r}$
- $E = \frac{1}{4\pi\epsilon_0} \frac{p}{r^2}$
What happens to the electric field on the axial line of a dipole at a very large distance from the dipole?
What happens to the electric field on the axial line of a dipole at a very large distance from the dipole?
- Electric field becomes constant
- Electric field becomes negligible
- Electric field becomes zero (correct)
- Electric field becomes infinite
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Study Notes
Electric Field of a Dipole
- As the distance from the dipole increases, the electric field on the axial line of a dipole decreases.
Electric Field Calculation
- The formula to calculate the electric field due to a dipole on its axial line is: E = k * p / r^3, where E is the electric field, k is Coulomb's constant, p is the dipole moment, and r is the distance from the dipole.
Electric Field at Large Distances
- At a very large distance from the dipole, the electric field on the axial line of a dipole approaches zero.
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