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23 Nov 2019
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 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.
Sixta KovacekLv2
10 Apr 2019
