Friday, June 14, 2019

Current flow in a circuit (purely resistive and restive-capacitive Lab Report

Current flow in a circuit (purely resistive and restive-capacitive - Lab Report display caseCurrent can be the flow of negative or validating charges or both. The conventional online direction of flow is the direction of flow of the positive charges, but the positive charges are immobile. Electrons carry the negative charge and in the direction opposite to that of electric or conventional current. For instance, if two metal plates or any other conductors are connected together by a wire e.g. copper wire, electrons flow from the conductor with higher potential toward the conductor with lower berth potential due to the potential difference between them. The electrons satiny between the two is referred as electricity and decreases with the decrease in the electrical potential. Therefore, it is necessary to affirm the electrical potential difference by using devices like the battery, solar cells, or electrical generators and is connected to loads like motors, light bulbs, heaters etc. Since these devices are loads, they slow down the flow of electrons due to the electrical foeman they offer.. Two main types of current are DC and AC.... It is necessary to control current flux in a circuit either by controlling the amount of voltage applied or the resistance in the circuit. This is done to avoid the undesirable results like damaging electrical components or valuables at home if for instance the optimal operating conditions are exceeded. Ammeter is used to measure the electrical current flowing through a circuit while voltmeter measures the electrical potential difference. Ammeter is placed in series and voltmeter in parallel with other components in the circuit. The ammeter will altogether measure the current in the branch it is placed but not current flowing in other branches of the circuit. Ammeters have relatively low resistance while voltmeters have high resistance. Power sources like a battery, generators are involve to keep current flowing in a circ uit (Voltage-force which pushes the electrons) and to a fault the circuit must be complete for the electrons to return to their source implying that conductors are necessary for current to flow. Insulators like glass or plastic are needed to avoid current leakage or short circuiting which may result to cut off supply of power to various electrical devices or in time damage them. The relationship between current, voltage and resistance in a circuit is clearly defined by Ohms law which states that electrical current is proportional to the voltage and inversely proportional to the resistance between any two points on a conductor provided the temperature of the conductor does not change (James, whoreson and Noble). I=V/R where I=current (Amperes), V=Voltage(volts), R=Resistance (Ohms).Therefore when current increases, voltage in the circuit

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