Respuesta :
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.
Answer:
A-- The independent variable is the number of dry cells, and the dependent variable is the length of time the bulb works.
Explanation: