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26 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 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.
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.
Trinidad TremblayLv2
28 Jul 2019
