A Three-Cell Flashlight Has 3 Batteries in Series, Each with an Emf

question 31

Multiple Choice

A three-cell flashlight has 3 batteries in series, each with an emf of 1.5 V. If the bulb has a resistance of 50 Ω, what current flows when the flashlight is operating? (Assume the internal resistance of the batteries is negligible.)

• A) 30 mA
• B) 10 mA
• C) 27 mA
• D) 90 mA
• E) 11 A

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Definitions:

Total Utility

The cumulative satisfaction or value that a person derives from consuming a certain quantity of goods or services.

Indifference Curve

A graph showing combinations of goods between which a consumer is indifferent, representing equal levels of satisfaction.

Convex

In economics, a shape of the curve describing a relationship that yields increasing returns or benefits, where the slope increases as you move from left to right.

Indifference Curves

A graphical representation of different bundles of goods between which a consumer is indifferent, showcasing preferences and trade-offs.