Ontario Grade 9 Science Class Practice Exam

Electric force can either be a force of attraction or a force of repulsion, depending on the types of charges involved. The other options are incorrect because they limit the concept of electric force to only one type of interaction between charges. In reality, electric force can have both attractive and repulsive components, making option C the correct answer. Option A is incorrect because electric force can also be repulsive, depending on the charges involved. Option B is incorrect for the same reason, as electric force is not always attractive. Option D is also incorrect because electric force exists and can be observed between charged objects, regardless of the nature of the charges involved.