1. Which of the following can be used to charge a metal rod that is held in your hand? Rub it with A. fur B. silk C. Wool D. it can't be done On A 2. Which of the following objects are attracted by a positively charged object?com.do A. only positively charged objects C. only neutral objects B. only negatively charged objects D. neutral and negatively charged objects 3. What happens when one material is rubbed against another? A. The material becomes electrically neutral C. The material becomes negatively charged B. The material becomes electrically charged D. The material becomes positively charged 4. The insulant between the two plates of a capacitor is called A. Conductor C. Dielectric B. Semi-conductor D. Superconductor 5. Which of the following is the correct force between two negative charges? A. D. 6. Which of the following is the correct force between one positive charge and one negative charge? B. 7. In which of the following forms is the energy stored in a capacitor? A. Charge B. Potential C. Capacitance D. Electric Field 8. A bird sitting on a high power line A. gets killed instantly C. gets a fatal shock B. gets a mild shock D. is not affected practically 9. What is the SI unit for electric potential energy? A. Erg B. Joule C. Coulomb D. Newton per Coulomb 10. A capacitor is connected across a battery and the plate separation of capacitor is increased without removing the battery, then A. capacitance will increase C. energy stored will decrease B. charge stored will increase D. potential difference will increase 11. 1 volt is equivalent to A. newton/ "/ second c. joule coulomb newton/ coulomb D. Joule/ second12. A test charge is moved from lower potential point to a higher potential point. The potential energy of test charge will A. Increase B. Decrease C. remain the same D. become zero 13, Which of the following statements is false for a perfect conductor? A. The surface of the conductor is an equipoten-tial surface. B. The electric field just outside the surface of a conductor is perpendicular to the surface. C. The charge camed by a conductor is always uniformly distributed over the surface of the conductor. D. None of these. 14. In a parallel plate capacitor, the capacity increases if A. area of the plate is increased. C. dielectric constantly decreases. B. area of the plate is decreased. D. distance between the plates increases. 15. A parallel plate air capacitor is charged to a potential difference of V volts. After disconnecting the charging battery the distance between the plates of the capacitor is increased using an insulating handle. As a result the potential difference between the plates A. increases B. decreases C. does not change D. becomes zero 16. Electric potential is A. potential energy of the field C. potential energy per unit volume B. potential energy of all charges D. potential energy per unit charge 17. Which, among the following qualities, is not affected by the magnetic field? A. Moving charge C. Change in magnetic flux B. Stationary charge D. Current flowing in a conductor 18. If the flow of electric current is parallel to the magnetic field, the force will be A. zero B. infinity C. maximum D. half the original value 19. Weakest force in nature is? A. Electric force C. Weak force B. Gravitational force D. Magnetic force 20. How can a magnetic field be produced? A. Using a permanent magnet C. Using a temporary magnet B. Electric current D. Using a permanent magnet or electric current 21. What areas of a magnet have the strongest magnetic effect? A. The sides B. The middle C. The poles D. The magnetic field lines 22. Magnetic poles that are unlike and magnetic poles that are alike A. run: stay B. stay; repel C. attract; repel D. repel; attract 23. What substance is attracted to a magnet? A. Iron B. Lead C. Silver D. Water 24. A bar magnet is divided in two pieces, Which of the following statements is true? A. The bar magnet is demagnetized. B. The magnetic poles are separated. C. Two new bar magnets are created. D. The magnetic field of each separated piece becomes stronger. 25. What happens when two north poles of magnets are placed together? A. They repel. C, They cancel each other out. B. They attract. D. The strength of the magnet is doubled