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問題一覧
1
The atom that gives up some of its electrons is
a positive ion
2
The fundamental negative charge is the
electron
3
An electron is a particle which
orbit the nucleus of an atom
4
Elements whose atoms have fewer than 4 electrons in their valency shell are
good conductor
5
The atomic number of an element is dependent upon the
number of electrons
6
The 1st shell (K) has a maximum of
2 electrons
7
The 4th shell (N) has a maximum of
32 electrons
8
Electron arrangement of potassium which has 19 electrons is
2.8.8.1
9
Charged bodies attract or repel each other with a force that is directly proportional to the product of their individual charges, and is inversely proportional to the square of the distance between them
Coulomb's Law
10
A vacuum is a medium
that allow electricity to flow unimpeded
11
The type of medium that is the best electrical conductor is
vacuum
12
The SI unit of electrical charge is
coulomb
13
An electrolyte liquid is
a liquid which can carry an electric current through it
14
The process used to make some non-conducting liquids conduct electricity is
ionization
15
Plasma is the state of matter where some
of the electrons in a gas are stripped or "ionized" from their molecules or atoms
16
The field about a charged body is generally represented by lines which are referred to as
electrostatic lines of force
17
Energy contained by an electron by virtue of its motion is
called kinetic energy
18
The rate of flow of charge (Q)is
Amber
19
Therefore Electric current Flow can be said to
flow from Negative to Positive
20
Directed drift means
current
21
This opposition to current flow is known as resistance (R), and the unit of measure is the
Ohm
22
conductivity is the inverse of
resistance
23
Mobile electrons means
free electron
24
current can be calculated by the formula
I = Q / t