A voltaic cell is an electrochemical cell used to produce electrical energy with the help of a chemical reaction. It is the primary cell which was designated by Alessandro Volta in 1800. Construction A simple construction of a voltaic cell is shown in figure below. It consists of a copper plate and a zinc plate immersed in a … Read more
S.N Valve S.N Transistor 1. The charge carriers of valves are electrons. 1. The carriers of the transistors are the electron and holes. 2. In a valve the charge carries are provided by heater called hot cathode. 2. In a transistor, charge carriers are provided by emitter. No heater or heating elements are required. 3. … Read more
A) α-radiation The α-rays are not rays, but consist of a stream of positively charged particles, having 2 units of positive (+) charge, and 4 units of mass. Thus, α-particles are doubly ionized helium atoms i.e., He2+. The α-particles emitted by any radioactive source are shot out with high velocity. The initial velocity depends on … Read more
1. It is a designed apparatus where electrolysis is carried out. It is an experimental set up or advice where chemical energy is converted into electrical energy. 2. This cell consists of a glass vessel or made up of any suitable plastic material, in which two electrodes are dipped into an electrolyte solution. Two electrodes … Read more