Answer to Question #6446 in Electric Circuits for Fainah

Question #6446
The total current delivered to a number of devices connected in parallel is the sum of the individual currents in each device. Circuit breakers are resettable automatic switches that protect against a dangerously large total current by "opening" to stop the current at a specified safe value. A 1500 W toaster, a 1020 W iron, and a 1250 W microwave oven are turned on in a kitchen. As the drawing shows, they are all connected through a 20 A circuit breaker to an ac voltage of 120 V. (a) Find the equivalent resistance of the three devices._________Ohms (b) Obtain the total current delivered by the source._____________A (c) Determine whether the breaker will "open" to prevent an accident. (The breaker will "open") OR (The breaker will remain "closed") ????
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