The starter and exit quiz of the lesson “Applications of motor and generator effects”, from the unit “Electromagnetism” (Year 11 Science) by Oak National Academy.
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Oak National Academy
12 questions
The abbreviation ‘p.d.’ stands for an electrical quantity. What is the full name of this quantity and what is its unit?
Each of the diagrams shows a wave, with distance along the horizontal axis. All of the diagrams have the same scale. Which two of these waves have the same amplitude?
An object makes a sound. Which of the following must the object be doing?
Which of the following are correct definitions of the frequency of a wave?
Which of the following statements are correct?
When a loudspeaker makes a sound, a part of it called the cone moves backwards and forwards. How does the motion of the cone change if the loudspeaker now makes a louder sound with the same pitch?
Match each of the following devices to a description of what it does.
Each of the diagrams shows an oscilloscope trace of a sound wave. All of the diagrams have the same scale. Which of the sound waves have the same pitch?
The diagram shows the coil, cone and permanent magnet of a loudspeaker. The coil is connected to an AC power supply. Which of the following statements are correct?
Sort the following statements into the correct order to describe the operation of a moving–coil microphone.
In which of the following ways does an amplifier change an electronic signal?
