Physics
In electromagnetic induction, energy transformation is from :
- Electrical to mechanical
- Mechanical to electrical
- Electrical to chemical
- None of the above
Answer
Mechanical to electrical
Reason — In electromagnetic induction, energy transformation occurs due to the relative motion between a magnetic field and a conductor, which induces an electromotive force (EMF) in the conductor. This induced EMF can then drive an electric current through the conductor, thereby converting mechanical energy into electrical energy.
Related Questions
A coil ABCD mounted on an axle is placed between the poles N and S of a permanent magnet as shown in figure.
(a) In which direction will the coil begin to rotate when current is passed through the coil in direction ABCD by connecting a battery between the ends A and D of the coil?
(b) Why is a commutator necessary for the continuous rotation of coil?
(c) Complete the diagram with commutator, etc. for the flow of current in the coil.
Draw a labelled diagram of a d.c motor showing it's main parts.
The magnitude of induced emf depends on the :
- number of turns in the coil
- rate of change of magnetic flux linked with each turn
- current
- Both (1) and (2)
Lenz's law is based on :
- conservation of momentum
- conservation of energy
- conservation of force
- none of the above