Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge.
Do two charged objects repel?
- The electric field and resulting forces produced by two electrical charges of the same polarity. The two charges repel each other. If a positive charge and a negative charge interact, their forces act in the same direction, from the positive to the negative charge.
- Like charges (two negatively charged particles or two positively charged particles) repel each other while opposite charges (a positively charged particle and a negatively charged particle) attract. Negatively charged particles repel each other due to electricity.
- Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges. The size of the force varies inversely as the square of the distance between the two charges. We can calculate this problem using the Coulomb’s Law equation.
- If the charges on both objects are negative, both objects will repel. If the charges on one object is positive and the charge on another object is negative, then the objects will attract.
F = k * q1 * q2 / d^2
Where:
F = electrical force between the two particles
k = Coulomb's law constant
q = quantity of charge
d = distance between the two particles
Let’s say that only the charge of q1 is doubled and the distance is halved. Therefore the new force would be:
F (new) = k * 2q1 * q2 / (d / 2)^2
F (new) = 8 k * q1 * q2 / d^2
F (new) = 8 * F (initial)
Therefore the force is multiplied by a factor of 8.
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