859 views

### Alternating current produced by the generator in a nuclear power plant is supplied to the primary coil of a transformer. Explain, with reference to Faraday's law of electromagnetic induction, how a current arises in the secondary coil.

A typical transformer consists of an iron core with two coils wound around it - the primary and the secondary. Any current-carrying wire produces a magnetic field around it, but because the primary coil carries an alternating current, it's going to produce a changing magnetic field. The alternating magnetic flux from the primary coil is going to penetrate the secondary coil.

Now, let's recall the Faraday's Law:

'The magnitude of an induced e.m.f is proportional to the rate of change of flux linkage'.

Since the flux is alternating, its rate of change cannot be zero or even constant - it has to be alternating as well. Therefore, a changing e.m.f is going to produce an AC in the secondary coil (provided it is a part of a closed circuit).

1 year ago

Answered by Jakub, an IB Physics tutor with MyTutor

## Still stuck? Get one-to-one help from a personally interviewed subject specialist

#### 14 SUBJECT SPECIALISTS

£26 /hr

Degree: Theoretical Physics (Masters) - St. Andrews University

Subjects offered:Physics, Science+ 1 more

Physics
Science
Maths

“Theoretical Physics PhD at Max Planck Institute with first-class MPhys from St Andrews University. Passion and motivation for STEM, experienced in tutoring.”

£26 /hr

Degree: PhD Engineering (Doctorate) - Durham University

Subjects offered:Physics, Science+ 3 more

Physics
Science
Maths
English Literature
-Personal Statements-

“PhD student in Engineering and part-time teacher at Durham University with experience tutoring from secondary school to degree level.”

£24 /hr

Degree: MPhys Theoretical Physics (Bachelors) - Edinburgh University

Subjects offered:Physics, Maths

Physics
Maths

“I am currently a student at the University of Edinburgh, doing my 4th year of the MPhys Theoretical Physics programme. I've managed to score an average grade of 81% in year 3, and I tend to consistently do well in my exams, which I be...”

£24 /hr

Degree: Physics and Astronomy (Masters) - Durham University

Subjects offered:Physics, Maths

Physics
Maths

“About meHi! My name is Jakub and I'm studying Physics and Astronomy at Durham University. I have been interested in sciences for as long as I can remeber and I really enjoy sharing thatpassion with others, be it through tutoring or a...”

### You may also like...

#### Other IB Physics questions

1 dm^3 of water steam at 200 degrees C, 10 bar enters a compressor. When it leaves, its temperature is 400 deg. C and volume 0.5 dm^3. Calculate the final pressure of steam. Critically discuss the assumptions you made in your calculations.

Based on Newton's 3 laws of motion why is linear momentum always conserved?

What is electromotive force and how is it different to potential difference?

What is the difference between thermal energy and internal energy?

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this.