Question

the force between two small charged sphere having charge of 1×10^–7 C and 2×10^–7 C please be 20cm parent in air?????????​

Answer 1

Answer:

Charge on the first sphere, q

1

=2×10

−7

C

Charge on the second sphere, q

2

=3×10

−7

C

Distance between the spheres, r=30cm=0.3m

F=

4πε

0

r

2

q

1

q

2

Where, ε

0

= Permittivity of free space

4πε

0

1

=9×10

9

Nm

2

C

−2

F=

(0.3)

2

9×10

9

×2×10

−7

×3×10

−7

=6×10

−3

N

Hence, force between the two small charged spheres is 6×10

−3

N. The charges are of same nature. Hence, force between them will be repulsive.