Question

What is the physics behind arc reactor ?​

Answer 1

Answer:

ARC stands for “affordable, robust, compact.” The design is a fusion reactor that's based on the tokamak, using magnetic fields to contain plasma at a high enough temperature (tens to hundreds of millions of degrees Celsius) to maintain the conditions necessary for fusion.

Answer 2

Answer:

Basically, it mashes two isotopes of hydrogen, deuterium and tritium, together at such high energies that they combine into one atom. When they fuse, the reaction produces helium and a free neutron. Critically, helium+neutron has less mass than deuterium+tritium, and the missing mass is converted to energy...

hope it helps you...