The barrier to fusion comes about because protons:
A)attract each other via the strong nuclear force
B)repel each other electrically
C)produce magnetic fields
D)attract neutrons via the strong nuclear force
E)attract electrons electrically

Question

Quizplus · Accepted Answer

Protons carry a positive charge, and like charges repel each other. In order for fusion to take place, protons must overcome this electrical repulsion and get close enough for the strong nuclear force to bind them together. This requires very high temperatures and pressures, which is why fusion typically only occurs in stars or in experimental fusion reactors.

The Barrier to Fusion Comes About Because Protons