Final answer:
The independent and dependent variables in a scientific experiment, electric current definition, and graph plotting explained for a clear understanding.
Explanation:
The independent variable is the variable that is changed or controlled in a scientific experiment to observe its effects. It is usually plotted on the x-axis of a graph. In the context of electric current, the number of cells can be the independent variable.
The dependent variable is the variable that is being measured and is affected by the independent variable. It is typically plotted on the y-axis of a graph. In the case of electric current, the current strength would be the dependent variable.
Electric current is the flow of electric charge. It is measured in amperes (A) and represents how much charge flows past a specific point in a circuit per unit of time.
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