What is the Power Supplied by the Dependent Current Source?

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SUMMARY

The power supplied by the dependent current source in the given circuit is calculated to be -60 units when V1 is 10 V and Ix is -2 A. The confusion arises from the interpretation of current direction and polarity. The correct formula used is power delivered = VI = V1 * 3 * Ix, leading to the conclusion that the negative sign indicates power is being supplied rather than consumed. This aligns with the conventional current flow from positive to negative terminals.

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Homework Statement



In the Figure below if V 1=10 V and i x= -2 A, what is the power supplied by the dependent current source?




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The Attempt at a Solution



The answer is -60. But I am getting 60. whenever It's power supplied doesn't it mean the current is entering from the negative end of the voltage ? like shown in the diagram? So shouldn't the negative signs cancel out? I am really confused.
 

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Current flow is caused by electrons. Electrons originate from the negative terminal of a battery. But conventionally, the direction of current is taken in reverse. That is, external to the battery, it's from + to -, or in other words, from - to + inside the battery.

In the question, direction of current is from - to + inside the source. So the given polarities are proper and power delivered = VI= V1 * 3 Ix
= 10 * 3 * -2
= -60 units.
 

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