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14 questions
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- Q1Students were instructed to design an electrical circuit that transforms chemical energy to electrical energy to sound energy. Which equipment must be included in their circuit?battery, light bulb, switchheater, wire, batterysolar panel, doorbell, batterybattery, wire, buzzer30s
- Q2A student connects a flashlight bulb to a battery using wires and leaves the flashlight on overnight. The next day, the student observes that the light has become dimmer. by nighttime, the bulb has stopped glowing. What can the student infer from the observation.All light energy was transferred to heat energythe circuit is incompletethe circuit remained completeAll chemical energy is the battery has been transformed to light and heat30s
- Q3Which statement best describes the relationship between motors and generatorsGenerators transform electrical energy into mechanical energy whereas electric motors transform mechanical energy into electrical energy.Generators transform mechanical energy into electrical energy whereas electric motors transform electric energy into mechanical energy.Both electric generators and electric motors transform current from a magnetic field into mechanical energy.Both electric generators and electric motors use motion in a magnetic field to produce electric current.30s
- Q4A coil of wire is wrapped around an iron core and rotated in a magnetic field. Electric energy begins to flow in the coil.motorcompassgeneratorelectromagnet30s
- Q5What is this device?generatorelectromagnetmotor30s
- Q6What is this device?electromagnetgeneratormotor30s
- Q7What is this devicegeneratorgeneratormotor30s
- Q8This is made up of a source, conductor, and transformerelectromagnettransformergeneratorelectric circuit30s
- Q9What happens in an electromagnet?Electric energy produces a magnetic fieldelectric energy is transferred to mechanical kinetic energyKinetic energy is transferred to electric energy30s
- Q10Has a Mechanical Kinetic to Electrical energy transformationelectromagnetmotorgeneratorMagneticc field30s
- Q11Has an electrical energy to mechanical kinetic energy transformationmotorelectromagnetmagentic fieldgenerator30s
- Q12Which object converts electrical energy into light energy?speakerlampbuzzerfan30s
- Q13What is the energy transformation of a fanelectrical into radiant energyradiant energy into light energysound energy into electrical energyelectrical into mechanical kinetic30s
- Q14What will happen in an electric circuit if a switch is opened?electricity will stop flowingelectricity will start flowingno change will happen30s
