The electric force \( F \) acting on a charge \( q \) in an electric field \( E \) can be calculated using the formula:
\[ F = qE \]
where:
- \( F \) is the electric force,
- \( q \) is the charge, and
- \( E \) is the electric field strength.
Given:
- \( q = 8.5 \times 10^{-6} , \text{C} \)
- \( E = 3.2 \times 10^{5} , \text{N/C} \)
Substituting in the values:
\[ F = (8.5 \times 10^{-6} , \text{C}) \times (3.2 \times 10^{5} , \text{N/C}) \]
Calculating that:
\[ F = 8.5 \times 3.2 \times 10^{-6 + 5} , \text{N} \]
\[ F = 27.2 \times 10^{-1} , \text{N} \]
\[ F = 2.72 , \text{N} \]
Thus, the electric force acting on the charge is approximately 2.7 N.
So the correct answer is 2.7 N.
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