Avery is experimenting with a simple circuit. She measures the current in the circuit three different times with a different battery each time. First, she uses a 1.5-volt battery. Next, she uses a 3-volt battery. Last, she uses a 9-volt battery. The resistance stays the same during each test. How does the current change for each test?
As the voltage of the battery increases, the current in the circuit will also increase. This is because Ohm's Law states that current (I) is equal to voltage (V) divided by resistance (R), or I = V/R. Therefore, if the resistance stays the same during each test and the voltage increases, the current in the circuit will also increase.
So, in Avery's experiments, the current will be the highest when she uses the 9-volt battery, followed by the 3-volt battery, and then the 1.5-volt battery. The relationship between voltage and current in a simple circuit is directly proportional, meaning that as voltage increases, current also increases.