Question

Question #b01d3

Answer 1

If balloon gains a charge of `-8 muC` then denim has gained a charge of `+8muC`.

The force of attraction between them when they are separated by a distance of 5 cm is given as:

`F= 1/(4*pi*epsilon_0)*(q_1*q_2)/r^2`

where,
`epsilon_0 = 8.85 *10^-12 F/m`
(assuming there is air between the balloon and the denim)

`q_1= -8 muC`
`q_2= +8 muC`
`r = 5*10^-2 m`

Substituting all the values in the equation we obtain force as,
-230.19 N. Negative value of F indicates the force is attractive in nature.