State the meaning of the terms:
(a) Electro-magnetic induction
(b) Electrolysis
(d) Electrorefining of metals
(c) Electrodes
Answers
Answer:
(a)The term electromagnetic induction means inducing electricity by magnetism. The process by which a changing magnetic field in a conductor induces current in another conductor is called as electromagnetic induction.
(b)Electrolysis, process by which electric current is passed through a substance to effect a chemical change. ... The process is carried out in an electrolytic cell, an apparatus consisting of positive and negative electrodes held apart and dipped into a solution containing positively and negatively charged ions.
(c)Refining of a metal (such as copper) by electrolysis, the crude metal used as the anode going into solution and the pure metal being deposited upon the cathode. — called also electrolytic refining.
(d)An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit