問題一覧
1
does not refer to a third type of charge, but to the presence in a region of positive and negative charges in equal amount.
neutral
2
like the gate valve and the hose like the connecting wires
voltage source
3
The sum of all currents entering a junction must be equal to the sum of all currents leaving the junction”
current law
4
device that measures the voltage or potential between two points.
voltmeter
5
subatomic particle found in the nucleus of every atom
neutron
6
another call for voltage
electromotive force
7
consisting of just one battery and one load resistance are very simple to analyze, but they are not often found in practical applications.
circuits
8
the study of the forces acting between charges in motion
electromagnetism
9
the study of the forces acting between charges, called electricity at rest
electrostatics
10
diagram uses simple images of components, while a schematic diagram shows the components and interconnections of the circuit using standardized symbolic representations
pictorial
11
imaginary region in space surrounding a charged object
electric field
12
the difference in electric potential between two points, which is defined as the work needed per unit of charge to move a test charge between the two points
voltage
13
passive two-terminal electrical component that implements electrical resistance as a circuit element
resistor
14
used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.
resistor
15
These circuits combine the characteristics of both series and parallel.
combination circuits
16
defined as flow of electrons in wire, or the rate of flow of charges thru a wire
current
17
are a graphical representations of an electrical circuit
electrical diagrams
18
in this circuit connection the components are connected end-to-end in a line to form a single path through which current can flow.
series
19
device that measures the current through a material in a circuit.
ammeter
20
The meter used to measure the energy that we consume at home is called the
kwh meter
21
is the rate of work done per unit time, at which electrical energy is transferred by an electric circuit
electrical power
22
imaginary region in space surrounding a charged object
electric field
23
continuous flow of charges through a material
electricity
24
The electric field has two frequently used
N/C
25
is the work done by moving electric charges
electrical energy
26
defined as a path for current to flow
electrical circuit
27
the study of the forms of energy associated with the flow of charge
electric current
28
states that the algebraic sum of potential differences, including voltage supplied by the voltage sources and resistive elements, in any loop must be equal to zero.
voltage law
29
in this circuit connection, all components are connected across each other’s leads
parallel
30
These laws are used to analyze and solve circuits that cannot be reduced by the rules of combining resistors in series and in parallel
kirchhoff's laws
31
measure of the opposition to current flow in an electrical circuit
resistance
32
is the separation of charge when near an already charged object with no physical contact
induction
33
the transfer by contact with an already charged object
conduction
34
The positive and negative terminals are called
polarities
35
in a parallel circuit is a path for electric current formed by one of the load components (such as a resistor).
branch