Why is the electric field of dipole not zero?
Why is electric field of dipole nonzero? Because the positive and the negative charges are separated by some distance. So though the a Gaussian surface enclosing the electric dipole has zero net charge the electric field in the region isn’t zero because there are separated charges inside the enclosed surface.
Is the electric field of a dipole zero?
In a uniform electric field the net force on an electric dipole is zero. But if the dipole moment p is not aligned with the electric field, then a torque acts on the dipole, trying to align p with E.
Can the electric field by a small dipole?
Answer. If dipole moment p is zero, then E=0,but then there is no dipole which is simply defined as two equal and opposite point charges separated by finite distance. This is not possible and hence field of a dipole is not zero.
What is the electric field at the Centre of an electric dipole?
Therefore, electrical field at point p is the question mark. Since the total distance between the charges is d and this point is the center of the dipole, therefore this distance will be equal to d over 2.
What are the electric field and electric potential at the midpoint of a dipole system?
A good example is the case of a dipole, which is two charges of the same magnitude, but opposite sign, separated by some distance. At the midpoint between the charges, the electric potential due to the charges is zero, but the electric field due to the charges at that same point is non-zero.
What is the value of electric dipole?
In electric dipole. … qd is defined as the electric dipole moment. Its magnitude indicates the maximum torque exerted upon a given electric dipole per unit value of the surrounding electric field in a vacuum. The electric dipole moment, a vector, is directed along the line from negative charge toward positive charge.
What do you mean by electric dipole and electric dipole moment?
An electric dipole is a separation of positive and negative charges. The electric dipole moment is the product of the magnitude of the charge and the distance between the centres of positive and negative charges.
What is the formula of electric dipole?
The formula for electric dipole moment for a pair of equal & opposite charges is p = qd, the magnitude of the charges multiplied by the distance between the two.
What is the direction of electric field?
Electric field is a vector quantity whose direction is defined as the direction that a positive test charge would be pushed when placed in the field. Thus, the electric field direction about a positive source charge is always directed away from the positive source.
Is electric dipole moment a vector quantity?
Electric dipole moment is a vector quantity and it is represented as →p=q×→d in vector form. Here p is the dipole moment, q is the charge and d is the distance and direction of →dis from negative charge to positive charge.
Why is electric dipole moment a vector?
It is a vector since it points in one direction (from one charge to the other), has an associated magnitude and so on. In a way, when you consider a multipole expansion it makes sense, the monopole momentum is just the net charge (a scalar), the dipole momentum a vector and from then on matrix quantities.