Electric Forces Quiz PDF

Quiz: Electric Forces Read each question. Circle the letter of the correct answer. **1.** A repelling force occurs between two charged objects when the charges are of \_\_\_\_\_\_\_\_\_\_\_\_\_\_. **A.** like signs **B.** unlike signs **C.** equal magnitude **D.** unequal magnitude **2.** Whe...

Quiz: Electric Forces Read each question. Circle the letter of the correct answer. **1.** A repelling force occurs between two charged objects when the charges are of \_\_\_\_\_\_\_\_\_\_\_\_\_\_. **A.** like signs **B.** unlike signs **C.** equal magnitude **D.** unequal magnitude **2.** When Bethany walks across a carpet, her socks pick up many electric charges. Later in the day, these charges are no longer present on her socks. What most likely happened to the charges? **A.** The charges disappeared. **B.** The charges switched signs. **C.** The charges transferred to another object. **D.** The charges broke apart into smaller particles. **3.** During a lightning storm, the bottom of a cloud gains a strong negative electric charge. Which of these describes the charge at the top of a tall metal pole directly under the cloud? **A.** The top of the pole would have no charge. **B.** The top of the pole would have a positive charge. **C.** The top of the pole would have a negative charge. **D.** The charge of the pole would not be affected by the charge of the cloud. **\ 4.** This image shows two circular objects. Each object has an electric charge, as shown. Which statement describes the force that is exerted on the objects due to their electric charge? **A.** There is a force pushing both objects to the left. **B.** There is a force pulling the objects toward each other. **C.** There is a force pushing the objects away from each other. **D.** There is no force on the objects due to their electric charge. **\ 5.** The diagram shows two pairs of charged objects. Objects A and B are interacting with each other, and objects C and D are interacting with each other.  Based on the diagrams, which statement is true? **A.** There are no electric forces because the charges in each pair of objects cancel. **B.** The electric force between A and B is smaller than the electric force between C and D. **C.** The electric force between A and B is greater than the electric force between C and D. **D.** The electric force between A and B is identical in magnitude to the electric force between C and D. **\ 6.** What happens when a rubber rod is rubbed with a piece of fur, giving the rod a negative charge? **A.** Negative charges are moved from the rod to the fur. **B.** Negative charges are moved from the fur to the rod. **C.** Negative charges are added to the rod, and the fur remains neutral. **D.** Positive charges are removed from the rod, and the fur remains neutral. **7.** The distance between a positively charged object and a negatively charged object increases. If everything else remains constant, what happens to the electric force between the objects? Choose the correct answer. **A.** The electric force decreases. **B.** The electric force increases. **C.** The electric force remains constant. **D.** There is not enough information to answer this question. Read each statement. Write your answer on the lines. **8.** A balloon is held near a person's hair, and the hair is not affected. The same balloon is rubbed on a piece of carpeting, and the balloon now attracts hair. Define electric charge and describe what happens to the charge that causes the balloon to attract the hair. **\ 9.** Describe how a neutral material becomes attracted to a negatively charged object brought near it. **10.** A glass rod is rubbed briefly with silk and the rod becomes able to attract and lift a number of small pieces of paper. If the rod is rubbed with silk for a longer period of time, explain what will happen and why.