In the figure,if Q = 30 μC,q = 5.0 μC,and d = 30 cm,what is the magnitude of the electrostatic force on q?
A)15 N
B)23 N
C)zero
D)7.5 N
E)38 N

Question

In the figure,if Q = 30 μC,q = 5.0 μC,and d = 30 cm,what is the magnitude of the electrostatic force on q? 
A)15 N 
B)23 N 
C)zero 
D)7.5 N 
E)38 N

Quizplus · Accepted Answer

The magnitude of the electrostatic force acting on q is given by:

F = (1/4πε0)(Qq/d^2), where ε0 is the permittivity of free space.

Plugging in the given values, we get:

F = (1/4πε0)(30×10^-6 C × 5.0×10^-6 C)/(0.3 m)^2

F ≈ 7.5 N

Therefore, the correct answer is choice D, 7.5 N.

In the Figure,if Q = 30 μC,q = 5