PHYSICS INVESTIGATORY PROJECTS FOR CLASS 12 CBSE ON TRANSFORMER PDF DOWNLOAD

C main and measure the input voltage and current using A. As such transformers are built in an amazing strength of sizes. Take thick iron rod and cover it with a thick paper and wind a large number of turns of thin Cu wire on thick paper say This constitutes primary coil of the transformer. The direction that the induced current flows is determined by the direction of the lines of force and by the direction the wire is moving in the field. It is a step down transformer.

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The transformer is a device used for converting a low alternating voltage to a high alternating voltage or vice-versa. This constitutes primary coil of the transformer. Finally it is refers to the phenomenon where an emf is induced when the magnetic flux linking a conductor changes. This is due to formation of eddy currents in iron core.

Electromagnetic induction or sometimes just induction is a process where a conductor placed in a changing magnetic field or a conductor moving through a stationary magnetic field causes the production of investigatry voltage across the conductor.

Physics investigatory project class 12 cbse

Current is produced in a conductor when it is moved through a magnetic oj because the magnetic lines of force are applying a force on the free electrons in the conductor and causing them to move. Number of turnings in the secondary coil and primary coil of a self-made transformer. Similarly it can be shown, that in a step down transformer, whatever we lose in voltage, we gain in current in the same ratio.

In electronic, measurement and control circuits, transformer size may be so small that it weight only a few tens of grams where as in high voltage power circuits, it may weight hundred of tones.

A transformer is most widely used device in both low and high current circuit. Hence, whatever we gain in voltage, we lose in current in the same ratio.

The current in the second wire will also be AC and in fact will look very similar to the current flowing in the first wire. Hence equation 3 can be written as: Teacher-In-Charge External Examiner 3. Connect p1, p2 to A. Therefore, rate of change of magnetic flux linked with each turn of S1S2 is less than the rate of change of magnetic flux linked with each turn of P1P2.

However, it would not have been possible without the kind support and help of many individuals. You just clipped your first slide! The magnetic field will be strongest inside the bar and at its ends poles. Clipping is a handy way to collect important slides you want to go back to later.

Physics project for class 12 download

C voltmeter and ammeter respectively. Repeat all steps for other self-made transformers by changing number of turns in primary and secondary coil.

Transformer is, therefore, an essential piece of apparatus both for high and low current chse. While taking the readings of current and voltage the A. Chemistry 12th Cbse Investigatory Project Documents. C main and measure the input voltage and current using A.

Leakage of magnetic flux occurs inspite of best insulations. Cover the primary coil with a sheet of paper and wound relatively smaller number of turns say 20 of thick copper wire on it.

Connect p1, p2 to A. NSK Swamy investgiatory school for providing me with facilities required to do my project. Michael Faraday is generally credited with the discovery of induction in though it projcts have been anticipated by the work of Francesco Zantedeschi in Around toJoseph Henry made a similar discovery, but did not publish his findings until later. Wrapping the coil around an iron bar will further concentrate the magnetic field in the iron bar.

Physics investigatory project class 12 cbse

No notes for slide. This is due to joule heating of conducting wires. Now customize the name of a clipboard to store your clips. Shyam Sunder, for his invaluable guidance which has sustained my efforts in all the stages of this project work.

I am highly indebted to my Physics teacher, Mr.