1. Which of the following briey summarizes the Law of Electric Charges? A. Charges always attract. B. Charges always repel. C. Charges that are opposite in nature attract; Charges that are the same in nature repel. D. Charges that are opposite in nature repel; Charges that are the same in nature attract. _2. if you comb your hair and the comb becomes positively charged, what will happen to your hair? it will . A. become negatively charged C. be repelled by the comb B. become positively charged D. remain unchanged _3. What will happen when two like charges are brought together? They will A. attract each other C. neutralize each other B. have no effect on each other D. repel each other 4. is it possible to charge an electrical insulator? A. Yes, because insulators can also conduct electricity. 8. Yes. because electrons can be transferred between insulators through friction. C. No, because insulators have no free charges in them. D. No, because insulators hinder charges from passing through them. 5. What law quanties the force of attraction and repulsion between charged bodies? A. Coulomb's Law C. Electrostatic Law B. Faraday's Law D. Kirchhoft's Law 6. When can a material become positively charged? A. by gaining electrons C. by losing electrons B. by gaining protons D. by losing protons 7. What happens to two uncharged objects? They , A. attract each other C. neutralize each othe B. repel each other D. have no effect on each other 8. A negatively charged rod is placed near a metal can that rests on a wooden chair. You touch the opposite side of the can momentarily with yOur nger. if you remove your nger before removing the rod. what will happen to the can? A. It will be discharged. C. It will become positively charged. B. Its charge will remain as it was. D. It will become negatively charged. 9. Your friend is electrocuted accidentally. Where would you NOT grab him so you you could save his life without you being electrocuted too? A. by the hair C. by his cotton jacket B. by his bracelet D. by his rubber shoes 10. What happens to ux density as charge increases? A. It increases. B. It decreases. C. it becomes zero. D. it remains constant. 11. What is the electric flux of a uniform electric eld E= 4,800 N/C passing through a at surface with an area of 7m2? A. 30. 600 N m2/C B. 33, 600 N mle C. 36, 000 N m2/C D. 36.300 N mZIC 12. Based on Gauss' law. how would you describe the distribution of point charges in a closed surface? A. arbitrary B. in line C. rational D. sequential 13. What happens to the potential energy if you will move a positive charge to a positive plate? A. it decreases. B. It increases. C. It is dissipated D. It remains constant. 14. A Gaussian sphere closes an electric dipole within it. What is the total ux through the sphere? A. dependent on the position of the dipole C. half due to a single charge B. double due to a single charge D. zero 15. A Gaussian encloses a positive charge 0 placed at its center. What can you say about the electric intensity? The electric intensity A. at every point on the surface is different B. at every point on the surface is different but it acts radially outwards C. is the same and acts radially inwards . D. is zero everywhere 16. How would you describe the strength of the electric eld? A. It is directly proportional to the force applied. B. It is inversely proportional to the force applied. C. it is directly proportional to the square of the force applied. D. It is inversely proportional to the square of the force applied. For items /6-20 write the SI unit of the following quantities. Choose from the options below. A. Vm B. C C. V/m or N/C D. m2 E. J/C F. V 16. electric field 17. area 18. electric flux 19. electric charge 20. electric potential