Generating EMF by Varying the Magnetic Flux (VCE SSCE Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What type of energy conversion occurs in electromagnetic induction?
What type of energy conversion occurs in electromagnetic induction?
Mechanical to electrical energy
What does magnetic flux represent?
What does magnetic flux represent?
Total magnetic field through an area
A loop of area 0.4 m² is in a 1.0 T field. What is the magnetic flux through it?
A loop of area 0.4 m² is in a 1.0 T field. What is the magnetic flux through it?
0.4 Wb
What is the unit of magnetic flux?
What is the unit of magnetic flux?
Weber (Wb) or T m²
What happens to induced emf when the number of coil loops is increased?
What happens to induced emf when the number of coil loops is increased?
It multiplies by the number of loops
According to Lenz's law, what does the induced magnetic flux do?
According to Lenz's law, what does the induced magnetic flux do?
Opposes the change that produced it
What is electromotive force (emf)?
What is electromotive force (emf)?
Potential difference at source terminals
When does current flow in the basic magnet-coil experiment?
When does current flow in the basic magnet-coil experiment?
Only when there is relative motion
What actually generates current in electromagnetic induction?
What actually generates current in electromagnetic induction?
Changes in magnetic flux
How do electromagnetic generators maximize induced emf?
How do electromagnetic generators maximize induced emf?
Maximize rate of flux change