At the midpoint of the axis of an electric di | vedclass

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(B) An electric dipole consists of two equal and opposite charges,$+q$ and $-q$,separated by a distance $2a$. Let the midpoint of the dipole be the or

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The electric potential is zero.

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(B) An electric dipole consists of two equal and opposite charges,$+q$ and $-q$,separated by a distance $2a$. Let the midpoint of the dipole be the origin $O$. The electric potential $V$ at any point due to a dipole is given by $V = \frac{1}{4\pi\epsilon_0} \frac{p \cos	heta}{r^2}$. At the midpoint of the axis,the distance from the positive charge is $a$ and from the negative charge is $a$. The potential due to $+q$ is $V_+ = \frac{1}{4\pi\epsilon_0} \frac{q}{a}$ and the potential due to $-q$ is $V_- = -\frac{1}{4\pi\epsilon_0} \frac{q}{a}$. The total potential $V = V_+ + V_- = \frac{1}{4\pi\epsilon_0} \frac{q}{a} - \frac{1}{4\pi\epsilon_0} \frac{q}{a} = 0$. Thus,the electric potential at the midpoint of an electric dipole is zero.

At the midpoint of the axis of an electric dipole,which of the following is true?

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