Question

An experimenter completes an experiment on which is the best light bulbs to use in a certain type of lamp. He tries 4 different light bulbs in the same lamp. He turns the lamp on with each type of light blub for the same amount of time.

What is the manipulated variable in this experiment?
the lamp,


the amount of energy used,


the amount of time the lamp is on, or


the light bulbs

Answer 1

THE AMOUNT OF ENERGY USED

Step-by-step explanation:

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