I was wondering about answering this question, as you seem to be demanding others to do your work rather than putting in some effort to show some working. But I felt that as you are clearly very early stages of learning about this, I shall give you the benefit of the doubt.
You may be new to this subject, but you should be aware of Ohm's Law: V=IR.
You have said that voltage (V) is 12. You have said that resistance (R) is 240. And you wish to know current (I). Put the numbers into Ohm's law, and you are there.
Current does not disappear. It leaves one terminal of the source, and will flow to the other terminal. As you only have one possible path for the current, if you know the current at point point of this loop, you know it all points of the loop.
If the resistor was to be removed, there are two possible set ups: either the resistor is replaced with a wire, and so you have a short circuit. V=IR still, but R=0 when V=12, so I=infinity. Second option is the resistor is removed completely, and you are left with an open circuit. Again, V=IR, but R is infinity, V=12, so I is 0.