# Shared Flashcard Set

## Details

Electrical Energy Fundamentals
chapter 2 important test questions and characteristics
13
Physics
02/24/2012

Term
 state Ohm;s law in words
Definition
 current in a circuit is directly proportional to the voltage applied to the circuit and is inversely proportional to the resistance of the circuit
Term
 list five rules that apply to series circuits
Definition
 Total resistance (R) is the sum of the individual resistance. There for the Voltage at the source (Vt) is equal to the sum of the voltages at the resistance. A break anywhere in the circuit stops the electron flow in the entire circuit. Ohm's law applies to any part of the entire circuit. The current (amperage) of a series circuit is the same throughout
Term
 List five rules that apply to parallel circuits.
Definition
 A break or opening in any branch of the parallel circuit does not stop the flow of electrons to the remaining branches. The voltages across all the branches of the parallel circuit are the same, and are equal to the voltage at the source. Ohm's Law applies equally well to the total circuit or any of the loops or branches. The total current (I) is equal tot he sum of the currents flowing through each of the branches. The total resistance of the reciprocal of the sum of the reciprocals of the separate resistance in parallel
Term
 Explain what electromagnetic induction is and how it is accomplished
Definition
 The Process of producing an electromotive force by varying the magnetic field surrounding a conductor
Term
 The strength of the electron flow in a generator can be increased by what four factors
Definition
 A greater number of turns (loops) of a wire in the coil..A faster speed of the conducting loop rotation...An increased strength of the magnets...Positioning the moving coil at right angels to the magnetic field lines of force
Term
 Explain the difference between a generator and an electric motor
Definition
 Motors are like generators they transform one kind of energy to another . While generators convert mechanical energy to Electrical energy
Term
 In electricity, differences in potential are measured in
Definition
 Volts
Term
 in the united states,_____ current provided by the power company has a frequency of 60 Hz
Definition
 Standord
Term
 A basic chemical device for providing electrical power is the
Definition
 Cell
Term
 Which of the following units are used to measure electricity A. Amperage B. Voltage C. Wattage D. All of the above
Definition
 D. All of the above
Term
 the units for measuring electrical pressure are
Definition
 Volts
Term
 what are the two units to measure power
Definition
 Watts and Volt-Ampers
Term
 In Electricity, the term Parallel means
Definition
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