Podcast
Questions and Answers
Which instrument is used to measure very small currents in microamperes?
What device converts electrical energy into rotational mechanical energy?
Who formulated the concept of electromagnetic induction?
Which type of reflection is also known as diffuse reflection?
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Which type of mirror is known as a converging mirror?
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In which part of the electromagnetic spectrum do radio waves have the longest wavelength?
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Study Notes
Measuring Small Currents
- A microammeter is the instrument used to measure very small electric currents in microamperes (µA).
Energy Conversion Device
- An electric motor converts electrical energy into rotational mechanical energy.
Electromagnetic Induction
- The concept of electromagnetic induction was formulated by Michael Faraday, which describes how a changing magnetic field can induce an electric current.
Types of Reflection
- Diffuse reflection occurs when light hits a rough surface and scatters in many directions, as opposed to regular reflection.
Types of Mirrors
- A concave mirror is known as a converging mirror because it converges light rays that are incident upon it.
Radio Waves
- In the electromagnetic spectrum, radio waves have the longest wavelength, typically ranging from one millimeter to thousands of kilometers.
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Description
Test your knowledge about the basic materials needed for an electric motor, the functioning of electric motors and generators, and principles like the right hand rule and left hand rule. This quiz covers topics such as electromagnetism, DC motors, electric generators, and galvanometers.
