A certain particle carries `-2.5 xx 10^(-16)C` of static charge. Calculate the number of electrons present in it.

Explanation

No. of electrons `= ("static charge")/("charge of each " e^(-))`
`= (2.5 xx 10^(-16)"coulomb")/(1.602 xx 10^(-19) "coulomb")`
`= 1.56 xx 10^(3)` electrons = 1.560 electrons.