5. The following illustrates some applications of electromagnetism EXCEPT. A MRT B CT Scan C electric fan o gas stove 6. Which of these devices uses magnet or electromagnet to make it work? CD TD CU MEO B. microchip C electric bell D. all of these 7. Electromagnetic induction is defined as a process which uses to produce a current A magnetic field B magnetic flux C electromagne D. compass B.Electromagnetic induction occurs in a coil when there is a change in A voltage in the coil C the coil's polarity 3. magnetic field Intensity 9 How will you describe the magnetic field around a current carrying coil? A The magnetic field is weakest near around the coil B. The magnetic field vary directly with the distance from the coil C. The magnetic field is strongest inside the current-carrying coil D The magnetic field lines are closed loops along the loops in the coll 10. You are an aspiring singer, as a student who dreams of becoming one you have to understand the uses of many of the recording devices used for this particular purpose such devices are found entirely or partially on the relationship between elecincity and magnetism which term is used to describe this relationship? induction B Conduction C. Magnetisen D Electromagnetic Induction 11. As part of a traffic light system, large loops of wire are buried beneath road intersections. Which of the statements is NOT TRUE about the operation of this traffic light system? A Vehicles driven over the huned coils activate a traffic light sensor B. The conducting loops activate a color-dependent field. C. The alternating current sent through the buried coils produce an electromagnetic field in each coil D A fixed number of vehicles over the coils can trigger the traffic light to change green 12. Which of the following statements BEST describes an electric motor? A. It changes electical energy to mechanical energy B.It changes mechanical energy to electrical energy C. Its effect is shown when current-calmning conductor within the magnetic field moves opposite of the force D. All of the above
