Equipment that use vacuum tube in the homes: 1. Television 2. Rectifiers 3. Amplifiers 4. Radio 5. Computer Monitor [Items…
Solid State Devices Vacuum tube devices Light and portable Heavy and bulky Do not produce too much heat nor noise…
Bugging devices are devices for keeping surveillance of a place, such that conversation there can be monitored. People coming in…
It is wrong to call a transistor radio just a transistor because it comprises many elements, like transistors, diodes, transformer,…
Peaceful uses of nuclear reaction: 1. Medical field for radiotherapy: This uses radioisotopes which are by-products of fission reactions. After…
Three instruments for detecting radiation from radioactive substances: - 1. Geiger – Muller tube/rate meter/Dekatron counter. 2. Ionization chamber 3.…
Differences between the magnetic properties of steel and soft iron. Soft iron Steel Easily magnetized Not easily demagnetized Demagnetized Magnetized…
The lines of force of a magnetic field do not cross because the line of force is the line along…
Suspend the magnet of known poles so that it can swing freely. Next, bring one pole of the other magnet…
The pole of a magnet is that portion of the magnet where its magnetic attraction appears to be strongest.