Consider two charges, q1 located at the origin and q2 located at a distance d to
ID: 1307616 • Letter: C
Question
Consider two charges, q1 located at the origin and q2 located at a distance d to the right of the origin as shown below.
a. If q1=q2 in which region (i,ii, or iii) is the electric field zero?
b. If q1 and q2 are equal in magnitude and opposite in sign in which region (i,ii or iii) is the electrice foeld zero?
c. Charge q1=2uC and q2=-4uC in which region (i,ii or iii) is the electric field zero?
d. Charge q1=2uC and q2=-4uC are seperated by 10cm. What is the magnitude and direction of the electric field at 5cm?
e. Two charges are seperated by 9cm. Charge q1=12uC and q2 is unknown. If the electric field is zero at x=6cm, what is the value of charge q2?
Explanation / Answer
a) II
b) None of the three regions
c) I
d)(8.99*10^9*2*10^-6*30)/.1^2 = 5394000
e) q1/(6)^2 =q2/(3)^2 so, q2=3uc