If a person wanted to engineer a new type of communication device, what field of study would be the most useful? A ) electrical engineering

B ) chemical engineering

C ) optical engineering

D ) mechanical engineering

Option A: electrical engineering.

Explanation: The field of electrical engineering, sometimes called electronics engineering, mostly outside the US, is a field of engineering that covers a number of subtopics that include large scale power systems, electronics, control systems, signal processing and telecommunications. In this case the engineer would specifically have to know about electronics (computer chips), signal processing (cell signals) and telecommunications.

it becomes positively charged by charging it

c) up

hope this