To investigate the factors affecting current in a wire introduction the aim of this investigation is to find out the factors that affect current in a wire electric current is defined as the rate of flow of electric charge variables that may affect the resistance of the wire every appliance has a resistance if the resistance is high, the. A wire's resistance depends on four main factors: i will investigate how the length of the wire affects the resistance next, i will set the power pack on the lowest voltage possible to ensure that the current passing through the circuit isn't too high (which could potentially affect the results because the wire. Voltage voltage can be thought of as the force that pushes electric current through the body depending on the resistance, a certain amount of current will flow for any given voltage it is the current that determines physiological effects nevertheless, voltage does influence the outcome of an electric shock in. There is also an effect of an annual cycle of new deepwater inflows, which shows up clearly in the salinity increase at 50 m depth in autumn oscillating barotropic currents flowing across sloping bottoms in stratified waters will generate baroclinic (internal) currents that get their energy from the barotropic currents. For most people, electricity is a mysterious force that somehow magically appears when we flip a light switch or plug in an appliance yet, while the science behind the flow of electricity is very complex, the basics of electrical flow, or current, are easy to understand if you learn some key terms and functions.
The known values you have are: the supply voltage (9v), the led forward voltage (say, 22v as an example), and the current you want to flow through the you will always have two of the three values as fixed values - either because they are set by external factors, like the power supply or battery voltage,. Introduction when current flows through a conductor, heat energy is generated in the conductor the heating effect of an electric current depends on three factors: the resistance, r of the conductor a higher resistance produces more heat the time, t for which current flows the longer the time the larger the amount of heat. Electric current 2921 photo by: marc dietrich an electric current is usually thought of as a flow of electrons when two ends of a battery are connected to each other the resistance of a piece of wire used in an electric circuit depends on three factors: the length of the wire, its cross-sectional area, and the resistivity of the.
The resistance of an object is a measure of the how reluctant current is to flow through that object it is given the symbol r and has the unit w (which is a greek letter omega and pronounced 'ohm') current only flows through a component of a circuit if a potential difference (voltage) is put across it the bigger the potential. Resistance is the property of a component which restricts flow electric current john vagabond's physics and what are the factors on which resistance of a conductor depends classroom meritnation four factors affecting resistance resistivity geometry temperature none of the electricity then it there are four. Many factors contribute to the strength of river currents river currents are influenced by the volume, or amount, of water flowing in a river a rivers steepness as it flows toward its destination can affect its currents the steepness of a river is called its stream gradient a river beds topography also influences. Electric current is flow of electrons in a conductor the force required to make current flow through a conductor is called voltage and potential is the other term of voltage for example, the first element has more positive charges, so it has higher potential on the other hand, the second element has charges that are more.
As depicted in the diagram below, the current in a circuit can be determined if the quantity of charge q passing through a cross section of a wire in a time t can be measured the current is simply the ratio of the to test your understanding, determine the current for the following two situations note that some extraneous. Both conventional current flow and electron flow are used by many textbooks in fact, it makes no difference which way the current is flowing around the circuit as long as the direction is used consistently the direction of current flow does not affect what the current does within the circuit generally it is much easier to.
Factors that affect resistance how much resistance a material has depends on several factors: the type of material, its width, its length, and its temperature all materials have some resistance, but certain materials resist the flow of electric current more or less than other materials do materials such as. The reasons for these changes in resistivity can be explained by considering the flow of current through the material the flow of current is actually the movement of electrons from one atom to another under the influence of an electric field electrons are very small negatively charged particles and will be repelled by a.
As darkness falls, they are used in logic circuits to turn on street lights a diode is an electrical one way street, which is useful sometimes in electronic circuits current is allowed through a low resistance pathway in one direction, the resistance is very high in the reverse direction so no current flows. This investigation can be used at ks4 in either chemistry or physics or as a project showing the overlap between both areas in chemistry, it would support work on electrolysis and concentration and in physics, it would support work on current- voltage graphs, the use of ammeters and voltmeters and calculating resistance. Another situation for which this formula is not exact is with alternating current (ac ), because the skin effect inhibits current flow near the center of the conductor for this reason, the geometrical cross-section is different from the effective cross- section in which current actually flows, so resistance is higher than expected. “the implications are that factors affecting currents flowing in the atmosphere – such as thunderstorms, cosmic rays and pacific ocean temperatures – may have distant effects on droplet properties in cloud bases,” says harrison “particularly interesting is the possibility that space weather changes could.