"Depends on how it is connected and on the rest of the circuit. Could be 5, could be 3, could be 2. Could be zero as you pop fuses. For example, if you have a voltage source delivering 2 amps to a fixed load, and you add a 3 amp current source, you will just pump current INTO the voltage source, if it can handle that. If it can't (true for most) the voltage will raise, as will the current into the load. If the load is linear, the voltage will go up to 1.5 times what it was, and the current to 3 amps. In the above example, if the voltage source can handle current into it, then the current into the load stays at 2 amps."
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