Answer the following questions (20 points) 1. Name and describe the components needed to make a complete circuit. You would need a bulb(converts electrical energy to radiant energy)‚ a battery(possible power source)‚ a switch(used to connect and disconnect the circuit)‚ a buzzer(converts electrical energy to mechanical energy)‚ a motor(converts electrical energy to mechanical energy)‚ a resistor(slow down electron movement)‚ a voltmeter(measures the voltage) and an ammeter(measures the current in
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Lab Report Electrical Conductivity Introduction There are some substances that are capable of conducting electricity‚ and the reason they conduct electricity is because of the type of compound the substance is. Electrolytes or any ionic compound conduct electricity and nonelectrolytes do not conduct electricity. An Ionic compound is formed from the electrical attraction between anions and cations‚ typically a metal with a non-metal‚ except hydrogen. When an ionic compound forms‚ the anion
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actuates an arm inside and closes the circuit. Relays are used as switches to control larger circuits with more power. Since a relay is able to control an output circuit of higher power than the input circuit‚ it can be considered to be a form of an electrical amplifier. When using a relay in a dc current‚ diodes are put in across the coil to dissipate energy from the collapsing magnetic field at deactivation‚ which would cause a spike in voltage and damage components if not there. In a single channel
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point of highest energy within the external circuit is closest to the __+__ ( +‚ - ) terminal. c. Use >‚ <‚ and = signs to compare the electric potential (V) at the four points of the circuit. VA VB VC VD 4) The role of a battery in an electrical circuit can be described in three different ways. First‚ it is the energy supply. Second‚ the energy supplied by the battery is required to do work upon the charge to move it against the electric field from the negative terminal to the positive
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in volts and is represented by the symbol V. http://physics.tutorvista.com/electricityandmagnetism/ohmslaw.html Resistance ● Resistance is an electrical quantity that measures how the device or material reduces the electric current flow through it. Measured in ohms (Ω) and represented by R. https://www.google.com/search?q=resistance&espv=2&biw=1366&bih=667&source=lnms&tb m=isch&sa=X&ei=uRP3VJroO4mvyQSGvYHoBQ&ved=0CAYQ_AUoAQ#tbm=isch&q=resista nce+in+circuit&imgdii=_&imgrc=y9SFhM_QxcpFSM%253A%3BU8lmR34zQfgLRM%3Bhttp%
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Apparatus..................................................................6 5.Important Terms........................................................7 6.Conductivity...............................................................8 7.Factors Affecting Electrical Conductivity.........................9 8.Procedure.................................................................10 9.Physical Constants.....................................................11 10.Observation Set 1..............................
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circuit diagrams. 2. Write the formulae to calculate the effective resistances when resistors are connected (a) in series and (b) in parallel. 3. How is the total potential difference calculated across a combination of resistors in series? 4. Example 12.7 An electric lamp‚ whose resistance is 20 Ω‚ and a conductor of 4 Ω resistance are connected to a 6 V battery (Fig. 12.9). Calculate (a) the total resistance of the circuit‚ (b) the current through the circuit‚ and (c) the potential
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predicted and actual resistance in a circuit of resistor combinations in series and in parallel. Background: A resistor is an electrical component/device that has electrical resistance. Resistors can be used in electric circuits for protection of components‚ voltage division or current control. In an ideal resistor the resistance remains constant regardless of the applied voltage or current‚ or the rate of change in the current (Resistor‚ 2005‚ Wikipedia). Electrical resistance is a measure of the
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A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance by balancing two legs of a bridge circuit‚ one leg of which includes the unknown component. Its operation is similar to the original potentiometer. It was invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843. One of the Wheatstone bridge’s initial uses was for the purpose of soils analysis and comparison.[1] -------------------------------------------------
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Electrical Components and Circuits Course: PHY101 Purpose: The purpose and objectives of this lab was to be able to draw completed electrical circuits using the correct symbols for selected electrical components‚ including batteries and diodes. Another focus was to calculate the proper resistance using Ohm’s law‚ use proper electrical currents and quantities‚ and lastly measure voltage and resistance in an electrical circuit using a multimeter. Materials:
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