A Neutral Metal Ball Is Suspended by a String

question 41

Multiple Choice

A neutral metal ball is suspended by a string.A positively charged insulating rod is placed near the ball, which is observed to be attracted to the rod.This is because:

• A)the ball becomes positively charged by induction
• B)the ball becomes negatively charged by induction
• C)the number of electrons in the ball is more than the number in the rod
• D)the string is not a perfect insulator
• E)there is a rearrangement of the electrons in the ball

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Definitions:

CPU

Central Processing Unit, the primary component of a computer that performs most of the processing inside a computer.

Output Module

A component in a control system that sends signals or power from the system to the external environment.

PLC System

A PLC system (Programmable Logic Controller) is a digital computer used for automation of electromechanical processes, such as control of machinery on factory assembly lines.

Programming Terminal

A combination of keyboard and monitor used to insert, modify, and observe programs stored in a PLC.