Okay, thanks for replying! Its either between repulsive or zero. It cannot be attractive since both charges aren't opposite. I know its repulsive as the correct answer but wouldn't it be zero since ball b is neutral charged and ball a is positive because for attractive both charges got to be opposite to each other, repulsive they got to be same since its positive and zero how would it be repulsive?tiny-tim said:hi danish1991! welcome to pf!
what happens to the charge when the metal balls are in contact?
tell us what you think, and why, and then we'll comment!
…tiny-tim said:
Electric force is a fundamental force of nature that describes the attraction or repulsion between two charged objects. It is caused by the interaction of electric charges, which can be positive or negative.
The electric force between two charges can be calculated using Coulomb's Law, which states that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
The direction of electric force is determined by the charges of the objects involved. Opposite charges attract each other, while like charges repel each other.
The unit of measurement for electric force is the Newton (N). This unit is derived from the equation F = kQ1Q2/r^2, where F is the force in Newtons, k is the Coulomb's constant, Q1 and Q2 are the charges, and r is the distance between them.
Electric force and electric fields are closely related. Electric fields are created by electric charges and the strength of the electric field at a certain point is directly proportional to the electric force that would be experienced by a charge at that point. In other words, the electric field is a way of describing the force that a charge would feel at a given point in space.