I have placed a powered rail on a slope with a redstone torch underneath it as shown in the following two pictures.
Now as you can see, the powered rail is in fact unpowered, despite the redstone torch underneath it.
However, if I place a redstone torch next to the powered rail it is powered, but when I remove it, it continues to remain powered, as it should have done in the first place.
Is this a glitch? Or some behaviour of redstone/minecart tracks that I am unaware of?