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When operating on a 120 V circuit, an electric heater receives of power, a toaster receives , and an electric oven receives . If all three appliances are connected in parallel on a 120-V circuit and turned on, what is the total current drawn from an external source? (a) 24.0 A (b) 32.0 A (c) 40.0 A (d) 48.0 A (e) none of those answers.     

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Aerielle Anne Beltran
Aerielle Anne BeltranLv10
17 Nov 2020

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

The total current delivered to a number of devices connected inparallel is the sum of the individual currents in each device.Circuit breakers are resettable automatic switches that protectagainst a dangerously large total current by "opening" to stop thecurrent at a specified safe value. A 1600 W toaster, a 1050 W iron,and a 1250 W microwave oven are turned on in a kitchen. As thedrawing shows, they are all connected through a 20 A circuitbreaker to an ac voltage of 120 V.


(a) Find the equivalent resistance of the three devices.


(b) Obtain the total current delivered by the source.

The total current delivered to a number of devices connected inparallel is the sum of the individual currents in each device.Circuit breakers and resettable automatic switches that protectagainst a dangerously large total current by "opening" to stop thecurrent at a specified safe value. A 1640-W toaster, a 1100-W iron,and a 1240-W microwave oven are turned on in a kitchen. As thedrawing shows, they are all connected through a 20-A circuitbreaker to an ac voltage of 120 V. (a) What is the equivalentresistance of the three devices? (b) What is the total currentdelivered by the source? (Will the breaker "open" in this case?)(c) Will the breaker open? 1 for yes or 2 for no.

Figure P27.3 shows the interior of a three-way incandescent lightbulb, which provides three levels of light intensity. The socket of the lamp is equipped with a four-position switch for selecting different light intensities, with the positions described as follows: (1) off (switches S1 and S2 both open), (2) switch S1 closed, (3) switch S2 closed, and (4) switches S1 and S2 both closed. The lightbulb contains two filaments. When the lamp is connected to a 120-V source, one filament receives 100 W of power and the other receives 75 W. What is the total power input to the light bulb when (a) only switch S1 is closed, (b) only switch S2 is closed, and (c) both switches are closed? (d) What If? Suppose the 75-W filament breaks and no longer is able to carry a current. How many switch positions will result in the light leaving the bulb and what will be the power input to the bulb in those positions?

Figure P27.3

Chapter 27, Problem 3P, Figure P27.3 shows the interior of a three-way incandescent lightbulb, which provides three levels

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