Generally, the battery wires, and sometimes the terminal CLAMPS, are color coded. Usually, RED is used to indicate a Positive conductor, and BLACK is used to indicate the NEGATIVE conductor. Color Coding of Battery Terminals To my knowledge, battery terminals themselves are not colored, OTHER THAN the color of the metal of which they are made.
View Full Document. Principles of Span of Control/Supervision According to this principle, span of control is a span of supervision which depicts the number of employees that can be handled and controlled effectively by a single manager. According to this principle, a manager should be able to handle what number of employees under him should be decided.
The control is a variable held constant, thereby not being âvariableâ at all. The role of a control is to ensure that varying factors the scientist is not interested in and that would normally lead to changes in the dependent variable will not have an influence on the dependent variable in the experiment.