The discussion revolves around calculating the energy transfer to a radio based on given current, voltage, and time values. The subject area includes concepts of electric current and energy transfer in electrical circuits.
Participants are actively engaging with the problem, raising questions about the definitions and relevance of certain terms. Some guidance has been offered regarding potential equations to use, but there is no consensus on the best approach yet.
There is uncertainty regarding the definitions of charge and energy in the context of the problem, as well as the appropriateness of certain equations for the scenario described.
I could use Q=Ixt right?PietKuip said:Use the GUESS method: Given, Unknown, try to find an Equation that kind of fits the given and unknown quantities (or just multiply every given number), Substitute the numerical values, "Solve".
(None of this requires any insight in the physics, of course. It is just a way of getting through schools with this kind of teaching.)
Is Q energy, or something else?Sace Ver said:I could use Q=Ixt right?
Yes, the charge Q is proportional to current and duration, but there is no build-up of charge in a radio, it is not very relevant in this context.Sace Ver said:I could use Q=Ixt right?
Okay first I would use Q=Ixt and then I would use E=VQ.SteamKing said:Is Q energy, or something else?
What's the definition of electric current?
And that would be the right answer!Sace Ver said:Okay first I would use Q=Ixt and then I would use E=VQ.