Question

two charges 6×10^-6C and -2×10^-6C are separated by a distance of 30cm apart in air. find the electrostatic force between the charges.​

Answer 1

Answer:

1.2 N attractive

Explanation:

force b/w two point charges is kq1q2/r^2

k= 9×10^9

q1= 6× 10^-6

q2 = 2× 10^-6

r=30/100 = .3 m

putting in the values

$\frac { 9 \times 10 ^ { 9 } \times 6 \times 10 ^ { - 6 } \times 2 \times 10 ^ { - 6 } } { ( 0.3 ) ^ { 2 } }$

1.2 N attractive as charges are of opposite sign