Explanation:
Engineering drawing abbreviations and symbols are used to communicate and detail the characteristics of an engineering drawing. There are many abbreviations common to the vocabulary of people who work with engineering drawings in the manufacture and inspection of parts and assemblies.
Some examples of these are:
BOT: Bottom
B.O.W.: Bottom of Wall
BP: Blue Print (or B/P)
BV: Butterfly Valve
CAD: Cadmium or Computer-Aided Drafting
CBORE: Counterbore
C.C.: Center to Center
C.D.: Construction Document
C.F.M.: Cubic Feet per Minute
CFS: Cubic Feet per Second
C.I.: Cast Iron
E.F.: Exhaust Fan
EQ: Equal, or Equally
E.W.: Each Way
Ext.: Exterior
FACP: Fire Alarm Control Panel
FAO: Finish All Over
Answer:
(a) The potential difference between any two points is zero.
Explanation:
A conservative field is;
i. a vector field that is the gradient of some function. Electrostatic field is the gradient of scalar potential, hence it is conservative.
ii. a vector field where the integral along every closed path is zero. This means that the work done in a closed cycle is zero. For an electrostatic field, the charge along closed path inside the field is zero. Hence, electrostatic field is conservative.
iii. a vector field if curl of its potential(vector product of the del operator and the potential) is zero. The curl of electrostatic field is identically zero everywhere.
iv. a vector field whose circulation is zero along any path.
v. a vector field whose potential difference between two points is independent of the path taken. The potential difference between any two points is not necessarily zero.
Other examples of conservative fields are;
i. gravitational field.
ii. magnetic field.
A. Email your teacher right away. It would be the safest option.