Which technological device makes an energy conversion in the same way that a human ear makes an energy conversion? Oa light bulb a loudspeaker a headphone a microphone Question 2 (1 point) Which statement is a reason why a generator can produce electricity? An electric field can apply a force to a charged object O A magnetic field can induce a current in a conductor moving within the field O A magnetic field can exert a force on a metal object An electric field can make a current in a conductor moving within the field. Question 3 (4 points) Match each description with the appropriate term listed a type of electrical contact found on DC generators a type of electrical contact found on AC generators 1. alternating current a stationary component of a motor 2. armature or generator that provides electrical contact 3. brush the wrapping of wire around an iron core within the magnetic field of a 4. coil motor or generator a component that serves as an axis 5. direct current for the rotating part of a motor or generator 6. shaft the complete rotating part of a 7. slip rings motor a flow of charges that only goes in 8. split-ring commutator one direction a flow of charges that reverses in a regular pattern Question 4 (1 point) Motors convert energy into energy. O kinetic, electrical O electrical, thermal O electrical, mechanical O mechanical, electricalQuestion 5 (1 point) An example of a generator is a and an example of a motor is Ohand-powered flashlight, blender Ofan, wind turbine O washing machine, vacuum cleaner O hydroelectric dam, solar panel Question 6 (2 points) The failure of a student-built motor during initial testing is usually due to the brush design. Explain why it is important to have the brushes exert just the right amount of pressure. Par... ~ By = . . . + A v =123 C Question 7 (2 points) Refer to the following diagram. After testing this student-built motor, the student saw the armature consistently turning in one direction. Describe two changes in the motor's design that would cause the armature to turn in the opposite direction (1 mark each). Paragraph v BIUVA Ev Ev + . . . Lato (Recom... 19px ... CQuestion 8 (2 points] The output from a current generator is described by the following illustration. input of mechanical energy.r to turn axle a. Explain why the voltage goes to zero during part of each cycle. [1 mark] h. Explain why the voltage magnitude peaks during part of each cycle. (1 mark} VBHa"+v Latc(Recom... V 19px... V ? 9 E ER 0 G Paragraph V B I U V AI :ZV Question 9 (2 points] Give two reasons explaining why electricity generated by AC generators is important to your lifestyle. Par... v B v :2 v ... in: eavoc