1.

If two opposite electric charges having same magnitude are 10 cm away from each other, they experience 0.9N attractive force then magnitude of electric charges will be......

Answer»

`1pC`
1 nC
`1 muC`
1 mC

Solution :Here, `F = (kq^(2))/R^(2)`
`F = 0.9 N, k = 9 XX 10^(9) SI, gamma = 10 cm = 10^(-2) cm`
`therefore Q^(2) = (Fr^(2))/k = (0.9 xx 10^(-2))/(9 xx 10^(9)) = 10^(-12)`
`therefore q = 1 xx 10^(-6) C, therefore q = 1muC`


Discussion

No Comment Found

Related InterviewSolutions