English

Draw a Simple Labeled Diagram of a Step-up Transformer.

Advertisements
Advertisements

Question

Draw a simple labeled diagram of a step-up transformer.

Diagram
Advertisements

Solution

Step up transformer

 

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Electricity and Magnetism - Exercise 5 [Page 213]

APPEARS IN

Frank Physics Part 2 [English] Class 10 ICSE
Chapter 4 Electricity and Magnetism
Exercise 5 | Q 14.5 | Page 213

RELATED QUESTIONS

 Two circular coils A and B are placed closed to each other. If the current in the coil A is changed, will some current be induced in the coil B? Give reason.


It is desired to measure the magnitude of field between the poles of a powerful loud speaker magnet. A small flat search coil of area 2 cm2 with 25 closely wound turns, is positioned normal to the field direction, and then quickly snatched out of the field region. Equivalently, one can give it a quick 90° turn to bring its plane parallel to the field direction. The total charge flown in the coil (measured by a ballistic galvanometer connected to coil) is 7.5 mC. The combined resistance of the coil and the galvanometer is 0.50 Ω. Estimate the field strength of magnet.


An emf of 2V is induced in a coil when the current in it is changed from 0A to 10A in 0·40 sec. Find the coefficient of self-inductance of the coil.


What condition is necessary for the production of current by electromagnetic induction?


In which of the following case does the electromagnetic induction occur?

A loop of wire is held near a magnet.


A conducting square loop of side l and resistance R moves in its plane with a uniform velocity v perpendicular to one of its sides. A uniform and constant magnetic field Bexists along the perpendicular to the plane of the loop as shown in figure. The current induced in the loop is _____________ .


The following diagram shows a fixed coil of several turns connected to a center zero galvanometer G and a magnet NS which can move in the direction shown in the diagram.

  1. Describe the observation in the galvanometer if
    1. The magnet is moved rapidly,
    2. The magnet is kept still after it has moved into the coil
    3. The magnet is then rapidly pulled out the coil.
  2. How would the observation in (i) of part (a) change if a more powerful magnet is used?


Answer the following:

State the principles of the electric motor and electric generator. 


A coil of 200 turns carries a current of 0.4 A. If the magnetic flux of 4 mWb is linked with each turn of the coil, find the inductance of the coil.


For making a strong electromagnet the material of the core should be ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×