A Light Bulb Is Connected in the Circuit Shown in the Figure

question 47

Multiple Choice

A light bulb is connected in the circuit shown in the figure with the switch S open.All the connecting leads have no appreciable resistance and the battery has no internal resistance.When we close the switch,which statements below accurately describe the behavior of the circuit? (There may be more than one correct choice.)

• A) The brightness of the bulb will increase.
• B) The brightness of the bulb will decrease.
• C) The brightness of the bulb will not change.
• D) The potential drop across R₂ will decrease.
• E) The potential drop across R₂ will not change.

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Definitions:

Test Statistic

A value calculated from sample data that is used in a hypothesis test to make a decision about the null hypothesis.

Sample Data

Data collected from a subset of a population, used to make inferences or predictions about the larger group.

Population Variance

A measure of the dispersion or spread of a set of data points in a population, calculated by taking the average of the squared differences from the mean.

Critical Value

A threshold or boundary in hypothesis testing that defines the cutoff between the rejection or non-rejection of the null hypothesis.