Two charges are repelling each other with a force magnitude F.

1. Two charges are repelling each other with a force magnitude F. If each charge doubled and the distance between the charges became four times the original distance, determine the new magnitude of the force.

a. (1/2)F

b. 4F

c. 2F

d. 16 F

e. (1/4)F

2. Point R is 0.4 m from a 2C charge. Find the electric field at point R.

a. 1.1x1011 N/C

b. 3.4x1011 N/C

c. 5.4x1011 N/C

d. 2.7x1011 N/C