A Household Circuit Rated at 120 Volts Is Protected by a Fuse

question 15

Multiple Choice

A household circuit rated at 120 volts is protected by a fuse rated at 10 amps. What is the maximum number of 100 watt light bulbs which can be lit simultaneously in parallel in this circuit without blowing the fuse?

• A) 4
• B) 6
• C) 12
• D) 20
• E) 24

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Definitions:

Stalactite

A conical or cylindrical cave formation that hangs from the ceiling of a cave and is composed mostly of calcium carbonate.

Travertine

A variety of limestone that is commonly concentrically banded and porous.

Karst Topography

A landscape formed from the dissolution of soluble rocks such as limestone, characterized by sinkholes, caves, and underground drainage systems.

Sinkhole

A depression or hole in the ground caused by the collapse of a surface layer, often due to the dissolution of underlying limestone, volcanic activity, or water withdrawal from wells.