Home › ICSE Class 10 › physics › Electromagnetism › In an a.c. generator the energy transformation is
In an a.c. generator the energy transformation is
AHeat to electrical energy directly
BElectrical to mechanical energy
CChemical to electrical energy directly
DMechanical to electrical energy
Answer & Solution
Correct answer: D. Mechanical to electrical energy
1. A generator rotates a coil in a magnetic field.
2. The mechanical rotation induces an emf and a current.
3. So mechanical input gives an electrical output.
4. Hence option A is correct.
_Source: Selina Concise Physics Class 10, Ch 10 Electromagnetism (Mistral OCR'd PDF), section on ac generator_
Related questions
In an a.c. generator, the slip-rings serve toInduction is greater in a coil whenIn a transformer the primary and secondary coils are usually wound aroundThe d.c. motor uses which rule to predict the direction of rotation?In Fleming's left-hand rule the thumb representsThe strength of an electromagnet can be increased byAn electromagnet differs from a permanent magnet because itA step-down transformer with 1000 primary turns and 100 secondary turns connected to 220 V