Power Loss

beenuseren

beenuseren

@beenuseren-AjaNg7 • Oct 7, 2024
hi,

Here's the link to the simple circuit:
#-Link-Snipped-#

let us assume a circuit with two DC supplies of 5V and 3V, and a resistor of 1k in series with one another. Also 5V and 3V are opposing one another.

Now the power loss across the resistor is I*I*R. = 4mW.
The question is will there be any power loss across the 3V.

I feel ,there won't be any power loss across the 3V supply as the resultant 2V will be supplying the 2mA current to the circuit. Am I right.
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  • reachrkata

    reachrkata

    @reachrkata-FOcqhH • Jul 22, 2010

    In fact it gains power = 6mW.

    - Karthik
    😁
    0
  • beenuseren

    beenuseren

    @beenuseren-AjaNg7 • Jul 22, 2010

    what does gaining power mean?
    0
  • beenuseren

    beenuseren

    @beenuseren-AjaNg7 • Jul 22, 2010

    If I assume the power supplies to be batteries, then there will be power gain across 3V. But I have assumed the power supplies to be regulated power supplies which are ideal. That is, no internal resistance and 100% efficient.

    Now will there be any power loss across the 3V supply?
    0
  • reachrkata

    reachrkata

    @reachrkata-FOcqhH • Jul 24, 2010

    No. Since the current will flow from the 5V supply into the 3V supply, it will always gain power. It is like charging a battery.

    - Karthik
    0