| Charge | Mass |
| $1$. It produces an electric field. | $1$. It produces a gravitational field. |
| $2$. It is an intrinsic property of matter. | $2$. It represents the quantity of matter in a body. |
| $3$. It can be positive or negative. | $3$. It is always positive. |
| $4$. Its value is invariant with respect to speed. | $4$. Its value increases with speed according to the relation $m = \frac{m_0}{\sqrt{1 - v^2/c^2}}$. |
| $5$. The force produced by it can be attractive or repulsive. | $5$. The force produced by it is always attractive. |
| $6$. Its $SI$ unit is coulomb $(C)$. | $6$. Its $SI$ unit is kilogram $(kg)$. |
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