IGCSE /Grade 10
Science MCQ Based On Electromotive force
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IGCSE Grade 10 Science Electromotive force
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Watt-hour is the voltage multiplied by the current for some amount of time.
In static-induced emf conductor remains static and the magnetic field changes.
Dynamically induced emf is an emf induced due to the relative motion of the conductor and the magnetic field.
EMF equation of a transformer
\\(E = 4.44f\\phi _{m}N\\)
Induced emf is directly proportional to the number of turns, magnetic field, area, and time in which the magnetic flux changes.
Fleming's right hand rule.
EMF is the voltage generated by the magnetic force according to Faraday's law.
Potential difference creates an electric field that causes the charge to move which creates a current.
Law of induction.
The transformers with this ratio between primary and secondary windings are used to protect secondary circuits and individuals from electric shock.
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