Paragraph 1: Electric charge is (1), meaning it exists only in multiples of e = (2) C. The force between two point charges q_{1} and q_{2} separated by distance r is given by (3), where k = (4) N $m^{2}$ $C^{-2}$. The SI unit of electric field is (5) and its dimensional formula is (6).

Answer Key:

1. quantized
2. $1.6 \times 10^{-19}$
3. F = kq_{1}q_{2}/$r^{2}$
4. $9 \times 10^{9}$
5. N/C (or V/m)
6. [MLT^{-3}$$A^{-1}]