Electrical engineers are attempting to maximize the efficiency of an experimental battery cell.They wish to determine the optimum charge rate that will provide maximum battery capacity.They sample 50 cells and randomly assign five different charge rates to the sample (10 cells for each charge rate).All cells are then discharged at the same rate with total capacity recorded in amp-hours.The variable in this experiment is:
A) all experimental battery cells.
B) the different charge rates.
C) the total capacity recorded in amp-hours.
D) the 50 sampled cells.

Question

Quizplus · Accepted Answer

The variable in this experiment is the different charge rates as they are being manipulated by the researchers to determine the optimum charge rate for maximum battery capacity. The other options are not the variable as they are either the population of cells being sampled or the outcome being measured.

Electrical Engineers Are Attempting to Maximize the Efficiency of an Experimental