Question

Nuclear energy is measured as _
A. $meV$
B. Curie
C. Farads
D. $mW$

Answer 1

Nuclear energy is the stored energy in the nucleus, or core, of an atom. Atoms are the smallest units of matter in the universe, and the nucleus is held together by energy. The dense nucleus of an atom contains a tremendous amount of energy. Nuclear energy can be used to generate electricity, but first, it must be extracted from the atom. In the nuclear fission process, atoms are divided to liberate energy.

Complete step-by-step solution:
Option A: Nuclear energies are extremely high in comparison to atomic processes, necessitating the use of larger units. The $MeV$is the most widely used unit. The $MeV$, or Mega Electron Volt, is a unit of energy commonly used in nuclear physics and engineering when discussing nuclear reactions. It is $1,000,000$ times the electrostatic energy that a single electron has when elevated to a potential of one volt.
Hence, option A is correct.
Option B: The curie (symbol $Ci$) is a non- $SI$ radioactivity unit that was first described in $1910$. It was named after Pierre Curie, according to a note in Nature at the time, but it was also thought to be named after Marie Curie by others.
Hence, option B is incorrect.
Option C: The farad (symbol $F$) is the $SI$-derived unit of electrical capacitance, which is interpreted as a body's potential to shelter an electrical charge. It is named after Michael Faraday, an English physicist. One farad is known as the capacitance over which a potential difference of one volt exists when charged with one coulomb.
Hence, option C is incorrect.
Option D: A megawatt is a measurement unit for electricity equal to one million watts. The energy generated by ten automobile engines is equal to one megawatt. $1,000Kwh$equals a megawatt-hour $\left( {Mwh} \right)$ $\left( {Kwh} \right)$. It's the same as $1,000Kw$ of power used continuously for an hour.
Hence, option D is incorrect.
Option A is correct.

Note: A nuclear reactor, also known as a power plant, is a set of machines capable of controlling nuclear fission to generate electricity. Pellets of the element uranium are used as fuel in nuclear reactors to produce nuclear fission. Uranium atoms are forced to break apart in nuclear reactors. The atoms break, releasing tiny particles known as fission products. Other uranium atoms break as a result of fission products, resulting in a chain reaction. Heat is generated by the energy released by this chain reaction.