Question

antonio designed an electric circuit to test how well different types of metal conduct electricity. the circuit included a battery, a light bulb, wires, and clips that could be attached to a sheet of metal. if the metal conducted electricity poorly, the light bulb would appear dim. if the metal conducted electricity well, the light bulb would appear bright. antonio collected nine equally sized sheets of metal: three sheets of copper, three sheets of iron, and three sheets of aluminum. he used the clips to attach each metal sheet, one sheet at a time, to the circuit. for each sheet, antonio used a light meter to measure how much light the bulb produced. which of the following was an independent variable in this experiment? the amount of light produced by the light bulb the type of metal sheet used in the circuit

Explanation:

In an experiment, the independent variable is what the experimenter changes. Here, Antonio changes the type of metal sheet (copper, iron, aluminum) to observe its effect on the light - bulb's brightness. The amount of light produced is the dependent variable, which depends on the type of metal sheet.

Answer:

the type of metal sheet used in the circuit