Question

An object has an excess charge of −2.4 × 10−17 C. How many excess electrons does it have?

Answer 1

Given

The object has charge,

$-2.4\times10^{-17\text{ }}C$

To find

The number of excess electron

Explanation

The charge of a electron is

$1.6\times10^{-19}C$

Thus nuumber of electrons

$2.4\times10^{-17}\frac{1}{1.6\times10^{-19}}=150$

Conclusion

The number of electrons are 150