Question: Which of the following is the correct dimensional formula for electric charge?

Options:

1. [M^1 L^2 T^-3 A^-1]
2. [M^0 L^0 T^0 A^1]
3. [M^0 L^1 T^-2 A^1]
4. [M^1 L^1 T^-2 A^-1]

Correct Answer: [M^1 L^2 T^-3 A^-1]

Solution:

The dimensional formula for electric charge is [M^1 L^2 T^-3 A^-1], derived from the definition of current.