Which one of the following materials is more suitable for making cores of transformer?
Correct answer: C. Nickel
- A. Soft iron
- B. Copper
- C. Nickel
- D. Aluminum
Explanation
Explanation for this question will be added soon!
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electromagnetic Induction
Changing magnetic flux induces an emf according to Faraday's law, while Lenz's law gives the direction that opposes the change producing it. Transformers apply induction between coils to step alternating voltage up or down, with turns ratio, current transformation and energy losses determining practical operation.
Practise Electromagnetic Induction
288 free Electromagnetic Induction MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electromagnetic Induction questions
A transformer works on:
In step down transformer number of turns in:
For an ideal transformer:
A coil has an inductance of 0.02 Henry. When a current in the coil is changing at the rate of 150 A/S then the induced emf will be:
In a step down transformer, the input voltage is 200 V and theoutputvoltage is 5 volts the turn ratio of the transformer.
A 25 wattand 100 watt bulbs are joined in series and connected to the mains.Which bulb will glow brighter?