Three Identical Light Bulbs Are Connected in Parallel to a Constant

question 41

Multiple Choice

Three identical light bulbs are connected in parallel to a constant voltage power supply. Initially, switch S₁ is closed and the other two switches open. When the other two switches, S₂ and S₃, are closed, the brightness of the first light bulb

• A) is dimmer.
• B) is unchanged.
• C) is brighter.
• D) depends on how long the switches are on.
• E) Insufficient information to tell since V and R are not given.

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Definitions:

Categorical

Refers to data or variables that represent categories, such as 'gender' or 'type of car', where the categories do not have a natural order.

Correlation Coefficient

A numerical measure that indicates the extent to which two or more variables fluctuate together.

Independent Variable

An independent variable is the condition or factor that is manipulated by a researcher to observe its effects on the dependent variable.

Dependent Variable

The element in a study that is anticipated to vary as a result of adjustments made to the independent variable.