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2. points p and r are equidistant to charged object a, and they are positioned on opposite sides of the object. compared to the electric field at point p, the electric field at point r is

a. equal in magnitude and direction

b. equal in magnitude, perpendicular in direction

c. smaller in magnitude, equal in direction

d. equal in magnitude, opposite indirection

4. as shown in the diagram, points p and r form a straight line with point charge q. point p is located 25 cm from q, and point r is located 75 cm from q. let ep equal the magnitude of the electric field at point p. what is the magnitude of the electric field at point r?

a. ep/3

b. ep/9

c. ep/50

d. ep/25

5. the diagram shows an electric field generated by two oppositely-charged flat plates. where is the electric field uniform?

a. near the ends of each plate

b. at distances about 1 m or greater from either plate

c. throughout the region shown in the diagram

d. between the two plates

7. point charge q1 and q2 are separated by a distance of 60 cm along a horizontal axis. the magnitude of q1 is 3 times the magnitude of q2. at which point a on the axis is the electric field zero?

a. 22 cm to the right of q1

b. 44 cm to the right of q1

c. 38 cm to the right of q1

d. 49 cm to the right of q1

10. point charge q1 of 30 nc is separated by 50 cm from point charge q2 of -45 nc. as shown in the diagram, point a is located 30 cm from q1 and 20 cm from q2. what are the magnitude and direction of the electric field at point a? let the electrostatic constant k= 8.99 x 10^9n x m^2/c^2.

a. 7000 n/c, directed to q2

b. 13,000 n/c, directed to q1

c. 13,000 n/c, directed to q2

d. 7000 n/c, directed to q1