alleryInduction is greater in a coil when
AThe flux is steady all the time
BThe change in flux is slower
CThe change in flux is faster
DThe coil is far away from any magnet
Answer & Solution
Correct answer: C. The change in flux is faster
1. Induced emf depends on the rate of change of flux.
2. Faster change produces a larger induced emf.
3. A steady flux gives zero emf.
4. So option A is correct.
_Source: Selina Concise Physics Class 10, Ch 10 Electromagnetism (Mistral OCR'd PDF), section on rate of change of flux_
Keep practising Electricity: Current and Household Circuits
Browse all Electricity: Current and Household Circuits questions for Andhra Pradesh SSC (Class 10), or explore more Physics topics.
Related questions
In an a.c. generator, the slip-rings serve toIn 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 VA step-up transformer has