Omar wrote a hypothesis about batteries called dry cells. if more dry cells are connected end to end, a light bulb will work longer because there is more energy available. what are the variables in his hypothesis?

Answer;

The independent variable is the number of dry cells, and

The dependent variable is the length of time the bulb works.

Explanation;The main variables in a given experiment are the dependent variable and independent variable.An independent variable is the variable that is changed or controlled in a scientific experiment. Its purpose is to determine the effects of dependent variable.Dependent variable is the variable that is being tested and measure in a scientific experiment. in this case, the independent variable is the number of dry cells , while the dependent variable is the length of time the bulb works.