To find the magnitude of the electric field, we can use the formula:
Electric field strength = Force / Charge
In this case, the force acting on the water droplet is its weight, which can be calculated using the formula:
Weight = mass x acceleration due to gravity
The acceleration due to gravity is approximately 9.8 m/s^2 (assuming this is on the surface of the Earth). Therefore, the weight of the water droplet is:
Weight = 3.25 x 10^(-5) kg x 9.8 m/s^2 = 3.185 x 10^(-4) N
Now, we can calculate the magnitude of the electric field:
Electric field strength = Force / Charge
= 3.185 x 10^(-4) N / 4.00 x 10^(-15) C
≈ 7.96 x 10^(10) N/C
Therefore, the magnitude of the electric field is approximately 7.96 x 10^(10) N/C.