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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
two chargeq each are kept 1m apart where should third charge be placed in order to get third charge
find time period and frequency of vibration of water level in a limb of manometer executing simple harmonic
water jet machining is an advanced method for cutting plates using a high-velocity water jet mixed with abrasive powder the jet comes out of a
explain the chemical change that take place in the conversion primary alcohols into secondary
forceforce may be defined as a push or a pull upon an object in the english system the pound 1b is used to express the value of a force for
energythe term energy may be defined as the capacity for doing work there are two forms of energy potential energy and kinetic energypotential
powerthe rate of doing work is called power and it is defined as the work done in unit time as a formula this would bepower work donetime