Electrostatics & Coulomb's Law

F = k q_1 q_2 / r^2 = 0.01\ N

Force0.01 N

InteractionAttraction

Field from q1 at q26743 N/C

q1 (μC)3

q2 (μC)-2

Distance r (m)2

Make the two charges repel each other (give them the same sign)
Make the two charges attract each other (give them opposite signs)
With q1 = 2 μC and q2 = 2 μC at r = 1 m, confirm the force; then move to r = 2 m and confirm it has dropped to exactly a quarter
Bring the charges as close as possible (r = 1 m) with both charges at their maximum magnitude, to reach the largest force this sim allows
With q1 = 4 μC at r = 2 m, confirm the electric field it produces at that distance reads about 8991 N/C