Question

The electric field intensity just sufficient to balance the earth’s gravitational attraction on an electron will be:

• A. \( -5.6 \times 10^{-11} \, \text{N/C} \)
• B. \( -4.8 \times 10^{-15} \, \text{N/C} \)
• C. \( -1.6 \times 10^{-19} \, \text{N/C} \)
• D. \( -3.2 \times 10^{-19} \, \text{N/C} \)

Hint:

To balance gravitational force on an electron, the electric field intensity must equal \( mg/e \).

Answer 1

The Correct Option is A