can someone please explain to me what mean "the current/voltage source absorbing power" ? and i mean practical because i can understand the maths concerning the consept thank you

 

Battery/Accumulator is a real world example of a voltage source. And when we connect load across battery terminal we discharge battery. But we also can recharge the batteries and during charging the battery absorb power.
We have the same situation with a current sources. When current source provides/delivers the power to the load, current source act like a source.
But when current source act like a load then current source absorb/consume power.

 

thank you jony130 thanks a lot