Chapter 18. Power for a circuit element (18-23)

Question

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{"title":"Power produced by or transferred into a circuit element","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"1,8,39,55\"}]"} {"title":"Voltage (absolute value) across the circuit element","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"120,4,160,56\"}]"} {"title":"Current through the circuit element","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"93,8,120,53\"}]"}

Question

YCFVOp/Ie/33ap/PSES4H+SdjvApykNXKFdKqAQJEjGOmYAtJFzvR6GGbUskhRy260R6tXtmQgucISHEftQvvuveGOHX/hcc
{"title":"Power produced by or transferred into a circuit element","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"1,8,39,55\"}]"} {"title":"Voltage (absolute value) across the circuit element","description":"Correct!","type":"correct","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"120,4,160,56\"}]"} {"title":"Current through the circuit element","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"93,8,120,53\"}]"}

Question

JgRerD921jrPkHYxLorY8eyLfWUOU9oWRui1fZ97JnYJI7Vmr9aMEQ==
{"title":"Power produced by or transferred into a circuit element","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"1,8,39,55\"}]"} {"title":"Voltage (absolute value) across the circuit element","description":"Incorrect","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"120,4,160,56\"}]"} {"title":"Current through the circuit element","description":"Correct!","type":"correct","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"93,8,120,53\"}]"}

Review

Equation 18-23 applies to any circuit element: The amount of power that flows into or out of a circuit element is equal to the product of the current through the element multiplied by the voltage across the element. For a given voltage \(V\), each small amount of charge \(\Delta{q}\) that traverses the circuit element transfers the same amount of energy into or out of the element; the more charge that traverses the element per unit time and so the greater the current \(i\), the greater the rate of energy transfer \(P\).