A 82-W incandescent lamp is connected to a 178-V source and is left burning continously in an otherwise dark staircase. Determine the following: a) the current through the lamp. b) the cost (in cents) of operating the light for five hours if electricity costs 9.5 cents per KWh.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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A 82-W incandescent lamp is connected to a 178-V source and is left burning continously in an otherwise
dark staircase. Determine the following:
(a) the current through the lamp.
(b) the cost (in cents) of operating the light for five hours if electricity costs 9.5 cents per KWh.
Transcribed Image Text:A 82-W incandescent lamp is connected to a 178-V source and is left burning continously in an otherwise dark staircase. Determine the following: (a) the current through the lamp. (b) the cost (in cents) of operating the light for five hours if electricity costs 9.5 cents per KWh.
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