B. watch your surroundings
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Answer:
a. molecular interactions.
Explanation:
Conduction is thermal energy transfer by molecular interactions. Therefore, conduction involves the transfer of electric charge or thermal energy due to the movement of particles. When the conduction relates to electric charge, it is known as electrical conduction while when it relates to thermal energy, it is known as heat conduction.
In the process of heat conduction, thermal energy is usually transferred from fast moving particles to slow moving particles during the collision of these particles. Also, thermal energy is typically transferred between objects that has different degrees of temperature and materials (particles) that are directly in contact with each other but differ in their ability to accept or give up electrons.
Some examples of conductors include metal, steel, aluminum, copper, graphite, etc.
Hence, conduction is thermal energy transfer as a result of the movement of electrons and collision between the molecules of an object.
Given:
voltage, V = 3600V
step-up voltage, V' = 100000 V
Resistance of line, 
Solution:
To calculate % heat loss in long distance power line:
Power produced by AC generator, P = 
W
P = 180000 W = 180 kW
At step-up voltage, V = 100000V or 100 kV
current, I = 
I = 
I = 1.8 A
Power line voltage drop is given by:
Power dissipated in long transmission line 
Power dissipated in long transmission line 
= 324 W
% Heat loss in power line, 
% Heat loss in power line, 
