Answer: 
Electrostatics is a branch of physics that studies electric charges at rest. Since classical physics, it has been known that some materials, such as amber, attract lightweight particles after rubbing. The Greek word for amber, or electron, was thus the source of the word 'electricity'.
 
        
             
        
        
        
Answer:
<u><em>note:</em></u>
<u><em>solution is attached due to error in mathematical equation. please find the attachment</em></u>
 
        
             
        
        
        
C I’m not that sure though
        
                    
             
        
        
        
P=w/t
w=15
t=3
therefore, 5 watts (b)
        
             
        
        
        
Answer:
Check attachment for solution 
Explanation:
Given that 12V battery