Free electrons are electrons that are not bound to any atom and are free to move within a material, especially in conductors like metals. These electrons play a key role in electrical conductivity.
Related Questions:
- How can you say that cathode rays are negatively charged?
- Why is the image distorted when a magnet is brought close to old television screens or monitors with cathode ray tube (CRT) inside?
- How can you control the brightness of the waveform on the screen of a CRO?
- All modern devices (e.g., mobile phones, calculators, laptops, etc.) use digital signals for their working. Why is digital signal used?
- Is a NAND gate the reciprocal of an AND gate?
- What is the difference in producing a LOW (0) output for an OR gate and a NAND gate?
- What is the difference in producing a HIGH (1) output for an AND gate and a NOR gate?
- How are electrons emitted from electrically heated metal filament?
- Describe the construction and working of an electron gun.
- What effect do an electric field and magnetic field have on the electron beam?
- What is a Cathode Ray Oscilloscope (CRO)? Describe the working of its different parts and its uses.
- What is the difference between analogue and digital electronics? Give examples.
- What are logic gates? What is the operation of AND, OR, NOT, NAND, and NOR logic gates? Draw their symbols and truth tables.
- Where can logic gates be used? Explain simple uses of logic gates with examples.
- Physics 10 MCQ
- Simple harmonic motion and waves
- Simple harmonic motion and waves-NFE
- Give an example of vibratory motion which is not simple harmonic motion. Give a reason for your selection.
- At the extreme position, velocity is zero but acceleration is maximum in simple harmonic motion. How can you theoretically explain it?
- What will happen to the acceleration of a mass-spring system if its mass is doubled?