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we know that one has to deal with numbers in day-to-day life irrespective of his inclination and field of work also one
interconnection of cellscells may be connected in series parallel or any combination of the two in order to form a battery when cells are connected
cell capacitythe amount of electrical energy that a cell can provide from new to the end of its useful voltage on load is called the cell capacity
cell emfthe size of a cell has no bearing on the emf that it will produce the generated emf being determined solely by the materials used in its
production of electricity by lightthe photovoltaic cell or solar cell a photovoltaic cell generates an emf when light falls onto it several forms
production of electricity by pressurecertain crystals and semiconductors produce an emf between two opposite faces when the mechanical pressure on
production of electricity very large amounts of electrical energy lie dormant in the atoms of every speck of material in the universe whilst the
resistancean electric current is a flow of free electrons through a conductor the size of current flowing through a conductor for a given applied
movement of chargealthough electric current is referred to as the flow of electrons through a conductor it should be noted that more exactly any
electromotive force ndash emfto make use of electricity by provision of an electric current the potential different must be maintained that is the
potential differencewhen charges move from one point to another it is not the actual values of potential at those points which are important but the
voltagevoltage is the electrical equivalent of mechanical potential if a person drops a rock from the first storey of a building the velocity it
attraction amp repulsion of atomit can be observed that if two negatively charged bodies are brought together there is a force of repulsion between
energy levelsthe energy levels measured in electron volts ev in which orbiting electrons exist comply with a law of physics which states that energy
ionisationif the amount of external energy is large enough the valence electron can gain sufficient kinetic energy energy of movement to be removed
electrical materialsmaterials which allow an electric current to flow easily are known as conductors and those which prevent the flow of an
particle functionprotonsthe number of protons in an atom determines the kind of materialeghydrogen 1 protonhelium 2 protons lithium 3 protons
atomsif a water molecule could be magnified sufficiently it would be seen to consist of three smaller particles closely bound together these three
moleculeslet us take a piece of matter for example a drop of water and see what happens when it is sub-divided into smaller and smaller portionsthe
i figured out the volume and the width but i have no idea how to use that information to get the height and the
1 which of the following is greater than 43 x 109 a 21 x 109 b 32 x 109 c 53 x 109 d 74 x 108 2 which of
using examples of invertebrate phyla illustrate how the increase in complexity is reflected by their nervous
mr ouma bought two sets of ners for sh 300per set two machanic vice at sh 1000each three set of screw driver at sh 115 per set and tool box for
hi i was wondering what the structure of semi synthetic and synthetic polymers were i have an assignment due tomorrow and i cannot find any
i need help with a few homework questionswe had a substitute and i didn3939t get the chance to finish reading the