A bond with elements from B.
The equivalent resistance of n resistors connected in parallel is given by

(1)
In our problem, the resulting resistance of the 5 pieces connected in parallel is

, and since the 5 pieces are identical, their resistance R is identical, so we can rewrite (1) as

From which we find

.
So, each piece of wire has a resistance of

. Before the wire was cut, the five pieces were connected as they were in series. The equivalent resistance of a series of n resistors is given by

So if we apply it at our case, we have

therefore, the resistance of the original wire was

.
Answer: The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center. So it would be D.
In my opinion the answer is false