Ch: Electric charges and field
Properties of Charge
1. Charge is scalar.
2. For an isolated system, it is neither be created nor be
destroyed.
3. Charge is invariant.
4. Charge is quantized: Q = ±ne
Methods of Charging
1. Photoelectric effect
2. Thermionic emission
3. Frictional electricity
4. Induction
5. Conduction.
Coulomb's Law (for point charges only)
F = k * (q1 * q2) / r² , where k = 1 / (4πε₀) = 9 × 10⁹
- Electrostatic force doesn’t depend on the medium in which it
is kept.
- It is a vector quantity.
Properties of Charge
1. Charge is scalar.
2. For an isolated system, it is neither be created nor be
destroyed.
3. Charge is invariant.
4. Charge is quantized: Q = ±ne
Methods of Charging
1. Photoelectric effect
2. Thermionic emission
3. Frictional electricity
4. Induction
5. Conduction.
Coulomb's Law (for point charges only)
F = k * (q1 * q2) / r² , where k = 1 / (4πε₀) = 9 × 10⁹
- Electrostatic force doesn’t depend on the medium in which it
is kept.
- It is a vector quantity.
