Which of the following is a correct definition of the term rectification?
a. rectification is the opposition to current flow in a circuit.
b. rectification refers to the connection of components into a circuit.
c. rectification is the conversion of ac current to dc current.
d. rectification involves sensing an electrical quantity and converting it to a signal.
In electronics, rectification is the conversion of alternating current (AC) to direct current (DC). This process can be performed by a diode which is an electrical entity that allows current to flow in one direction but not in the reverse direction. An application of rectification is the research-based development of higher frequency rectifiers under terahertz and light frequencies.
C) electrons encircling a nucleus with neutrons and protons
- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.
- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.
- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.
- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.
so the best choice is a.) 2 calcium (ca) atoms