The Atom
Electricity Basics
Series DC
100
A device that's converts energy.
What is a Machine?
100
The measure of the work needed to move an electric charge.
What is Volt?
100
A combination of series resistance
What is a string?
100
Energy transmission devices.
What are Circuits?
100
The charge in motion
What is an electric current?
100
Voltages that are connected with polarities that allow current in the same direction.
What is Series-Aiding?
100
Equals the number of protons on an atom within the periodic table.
What is the Atomic Number?
100
The opposition to current flow
What is resistance?
100
A break in the current path.
What is Open circuit?
100
The units of a coulomb
What is ( ampere - sec ) ?
100
A device that introduces a specific resistance into an electric circuit.
What is a Resistor?
100
An extremely low resistance path for current flow.
What is a short circuit?
200
The three subatomic particles that make up an atom.
What is electrons, protons and neutrons?
200
The Factors affecting resistance.
Material , Length, Cross-sectional Area , and Temperature.
200
How much is the total resistance, RT ,of a series circuit if one of the resistors is open?
Infinite.
200
A substance that cannot be decomposed any further by chemical action.
What is a element?
200
The completely bare units of a volt.
Kg-m2 / amp - sec , aka a Joule/Coul broken down.
200
If two series-opposing voltages each have a voltage of 9V, the net or total voltage is
0V.
200
The outer most shell for any atom.
What is the valance shell?
200
The completely bare units of an ohm.
kg-m2/s-c2
200
If a resistor in a series circuit is shorted , the series current, I ,
Stays the same.
200
The order shells are designated by alphabetically.
K, L, M, N, O, P & Q
200
The completely bare units of a siemen.
S-C2/kg-m2.
200
A direct connection to the earth usually made by driving copper rods into the earth and then connecting the ground wire of an electrical system to this point.
What is earth ground?
300
The smallest constituent of an element.
What is a atom?
300
The relationship between the magnitude of the applied EMF and the amount pf charge flow through a conductor.
What is Ohm's Law?
300
Find Total voltage given 2 amps.
450 volts.
300
The valence shell contains greater than or equal to five electrons.
What is a insulator?
300
A 200 ohm resistor has 5 amperes pf current flowing through it. Find the amount of power dissipated by the resistance.
5000 watts.
300
Calculate VR3.
1 Volt.
300
The valence shell contains less than or equal to 3 electrons.
What is a conductor?
300
A resistance of 1 kilo-ohm has an EMF of 250V applied to it. Power delivered to the resistor.
62.5 Watts.
300
Calculate VR2.
VR2 = 5V.
300
The valence shell contains four electrons.
What is a semi-conductor?
300
Given a device that consumes 500 watts for a period of 5 days. Find the amount of electrical energy consumed in kilowatt hours.
60 KWH.
300
What is the power dissipated across R2 if the current is 2 amps.
300 watts.
300
The force of attraction or repulsion by charged bodies
What is a Coulomb?
300
The total efficiency of a cascaded system is best described as what?
%ET = ( N1 x N2 x N3...etc. ) x 100
300
What is my power dissipated across R3.
1.25 mW.
400
The maximum number of electrons in any shell is given by the expression:
# of electrons = 2 (N)2
400
Given a device that has 10 volts applied to it and draws 25 amperes of current. The device is left on for 3 weeks. Find the total amount of electrical energy used and cost if the electrical energy costs 6.5 cents per KW-Hr.
$8190.00
400
Three resistors in series have a total resistance RT of 2.7 kilo-ohms. If R2 is twice the value of R1 and R3 is three times the value of R2 , what are the values of the resistors.
Resistor 1 = 300 ohms.
Resistor 2 = 600 ohms.
Resistor 3 = 1800 ohms.
400
The expression to determine the number of neutrons contained within the nucleus of the atom.
# of neutrons = atomic mass - atomic #
400
If the current , I , carried by a resistor is doubled, the power dissipation in the resistance increases by a factor of
4.
400
States that the applied voltage VT equals the sum of IR voltage drops in a series circuit.
Kirchoff's voltage law.