Question

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?

(3 points)

The current decreases.

The current stops.

The current remains the same.

The current increases.
Skip to navigation

Answer 1

The current increases.

By Ohm's law (I = V/R), with the same resistance a larger battery voltage produces a larger current (3 V gives twice the current of 1.5 V; 9 V gives three times the current of 3 V).