Question

A piece of purple plastic is charged with 1.13×1061.13×106 extra electrons compared to its neutral state. What is its net electric charge (including its sign) in coulombs?

net electric charge:

×10

CC

A glittering glass globe is given a net electric charge of 4.61×10−64.61×10−6 C. Does the globe now have more or fewer electrons than it does in its neutral state?

fewer

more

How many more or fewer?

amount:

electronselectrons

Answer 1

1) Each electron carries a charge of

The plastic is charged with

Hence, net electric charge is

2) In the neutral state, number of protons and number of neutrons are equal. As protons and electrons are charged oppositely, they cancel out making the object electrically neutral. Adding positive charge equals to adding more protons or removing electrons.

Hence, when the globe is given a net positive electric charge it will have fewer electrons than it's neutral state.

Net electric charge given is

Dividing this with the charge of one electron we will have the number of fewer electrons.

Hence, number of electrons removed is