Two Light Bulbs, B₁ and B₂, Are Connected to a Battery

question 31

Multiple Choice

Two light bulbs, B₁ and B₂, are connected to a battery having appreciable internal resistance as shown in the figure. What happens to the brightness of bulb B₁ when we close the switch S?

• A) The brightness of B₁ increases permanently.
• B) The brightness of B₁ decreases permanently.
• C) The brightness of B₁ does not change.
• D) The brightness of B₁ increases temporarily but gradually decreases back to its original brightness.
• E) The brightness of B₁ decreases temporarily but gradually increases back to its original brightness.

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Definitions:

Successional Communities

Communities of plants and animals that gradually replace one another over time, following disturbance, leading to a more stable ecosystem known as a climax community.

Competition

An interaction between organisms or species, in which the fitness of one is lowered by the presence of another due to the shared consumption of a limited resource.

Beneficial

Refers to something that produces good or helpful results or effects.

Harmful

Refers to something causing damage or injury physically, mentally, or morally.