P4 Flashcards
1
Q
What makes an atom stable?
A
The same number of protons and electrons
2
Q
When a polythene rod is rubbed with a duster electrons are transferred from the ___ to the ___ making the rod negatively charged
A
duster, rod
3
Q
What makes an object…
- positively charged
- negatively charged
A
positively charged - due to lack of electrons
negatively charged - due to an excess of electrons
4
Q
small amounts of charge flowing through the body can be…
A
…fatal
5
Q
dust and dirt are attracted to…
A
…insulators
6
Q
Electric shocks can be avoided by… 3 points
A
…
- having an EARTH wire
- the worker stands on an insulating rubber mat so that the charge cannot flow through him
- shoes with insulating soles
7
Q
use of electro statics
A
in revision guide
