A uniform electric field in an area has a magnitude of 10 n/c and is directed upward. a charge brought into the area experiences a force of 2.0 n upward. the charge must be

charge=0.2 C. The charge is positive.

Explanation:

The formula for force is given by

F = q E

F = force = 2 N upwards

E = 10 N/C upwards

q = charge

so 2 = q (10)

q = + 0.2 C

As the direction of force is same as the direction of the electric field, so the charge is positive.