An expertly remodeled master bathroom will provide years of pleasure and comfort. But do an amateur job and youâll be reminded of the fact every day. Itâs a tricky space, unfortunately, with lots of moving parts crammed into a tight footprint, not to mention the volumes of water ready to exploit any and all leaks.
A voltage source is a two terminal device which can maintain a fixed voltage. An ideal voltage source can maintain the fixed voltage independent of the load resistance or the output current. However, a real-world voltage source cannot supply unlimited current. A voltage source is the dual of a current source.
Note that the voltage across the current source in the direction of the current flow is a drop, not a rise, so the current source is absorbing power, not sourcing power, given by: P = i * (-2V) = 15A * (-2V) = -30VA = -30W But that wasn't a question asked.