What is constant current: Definition and 1 Discussions
A constant current (steady current, time-independent current, stationary current) is a type of direct current (DC) that does not change its intensity with time.
Since we want the current to stay constant, the change in potential energy that's caused by the coil flipping in the magnetic field should be "undone" by the work done by the power supply, so shouldn't ##W = -\Delta U## ? the answer guide did it without the negative sign, so I'm wondering if the...