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electrical bell1an electromagnet which is made by winding insulated copper wire on a soft iron core2an armature which is soft iron strip with
electric motora device which converts electric energy into mechanical energy is known as electric motorfactors on which the speed of rotation of
hard ferromagnetic substancesthose substances that do not lose their magnetism or removing from magnetic field are known as hard magnetic substance
explain the functions of multicellular organismmulticellular organisms are specialized quite similar to a team that does a lot of work efficiently as
soft ferromagnetic substancesthose substances that lose their magnetism are known as soft magnetic substances such as soft
ferromagnetic substancea substance which behaves as a magnet in presence of a strong magnetic field is known as ferromagnetic substanceeg iron
explain the functions of unicellular organismyou might wonder what functions a single-celled organism is capable of performing surprisingly a
voltmeteran electromechanical instrument which is used to calculate potential difference among two points is known as voltmetervoltmeter is a
ammeteran electromechanical instrument which is used to calculate the amount of current flowing by an electric circuit is known as an ammeterit is
define unicellular organisms and multicellular organismsyou may be aware that some organisms are made up of only one cell while others have more than
explain cell - the basic unit of lifeyou must be aware of the fact that the cell is the basic unit of life what do you understand by the term cell
galvanometer1 an electromechanical instrument which is used to detect the presence of current in a circuit is known as galvanometer2 the major parts
factors on which magnetic force dependsthe magnetic force depends on following factors1 nature of pole like poles repel each other and unlike pole
methods of demagnetization1 a magnet loss its magnetic properly when it is heated strongly2 practically a magnet can be demagnetized by hammering
method of making magnetthere are two types of making magnetssingle touch methoda in this method a bar magnet is rubbed on a hard steel barb the
right hand rulejames clark maxwell proposed a rule to search the direction of magnetic lines of force around a wire carrying current this rule
electromagnetisma temporary magnet formed by winding a coil of insulated copper wire around a piece of shift iron is known as electromagnet when
magnetism1 there are two types of magnetic pole north and south2 like poles repel and unlike pole attract each other3 magnetic substance produce
static electricity1 there are two types of charges positive and negative2 like charges repel and unlike charges attract each other3 charged bodies
explain relationship of vitamins and mineral with physiologythey play a major role in the bodys functioning vitamin a is necessary for night vision
define relationship of proteins with physiologythese form building block through their amino acids they pass through blood stream and go to liver
define fats - nutritional componentsonce the body stops eating it begins to live on its fat fat storing depots adipocytes are located in the
define carbohydrates sugar like a candle can burn but burning requires oxygen we eat to do work to do their work cells need an important group of
explain joules lawwork done is directly proportional to the heat
alternating current acsuch a current can be obtained if a resistor is linked in series with a source of alternating voltage this current alters its