Question

A 7.80-nc charge is located 1.81 m from a 4.30-nc point charge. (a) Find the magnitude of the electrostatic force that one charge exerts on the other. N (b) Is the force attractive or repulsive? O attractive O repulsive

Answer 1

Step-by-step explanation:

Given that,

Charge 1,
`q_1=7.8\ nC=7.8* 10^(-9)\ C`

Charge 2,
`q_2=4.3\ nC=4.3* 10^(-9)\ C`

Distance between charges, r = 1.81 m

(a) The electrostatic force that one charge exerts on the another is given by :

`F=k(q_1q_2)/(r^2)`

`F=9* 10^9* (7.8* 10^(-9)* 4.3* 10^(-9))/((1.81)^2)`

`F=9.21* 10^(-8)\ N`

(b) As both charges are positively charged. So, the force of attraction between them is repulsive.