Question

Charges a and b in the figure are equal. Exerts a force on the other of magnitude. Suppose the charge of b si increased by a factor of 4, but everything else is unchanged

Answer 1

To the charges A and B, The force on B is: 4F

To the charges A and B in the figure qA=qB and exerts a force on the other of magnitude, suppose the charge of B is increased by a factor of 4 : 4qB, but everything else is unchanged, then:

qA=qB

d

4qB

Coulomb law

F = K*qA*qB/d²

F' = K*qA*4qB/d² = 4* K*qA*qB/d²

F'= 4F