Eletricity and Magnetic Flashcards
1
Q
What is current?
A
Current is an electrical charge
2
Q
How is current measured?
A
It os measured in ammeters
3
Q
Describe where charge comes from?
A
All chargers come from atoms .
The atoms contain two different charges and one that has no charge.
They are called protons (positive)
Electrons (negative) and neutrons (they have no charge.
4
Q
Why static occurs?
A
Static occurs when the two charges become unbalanced.
5
Q
What is potential difference?
A
Is a cell providing a push to make charges move.
6
Q
How is potential difference measured?
A
In volts (V)
7
Q
What is the formula for
calculating resistance?
A
V=I x R
8
Q
Whats a conductor?
A
A material or an object that conducts heat, electricity, light, or sound
9
Q
What is an insulator?
A
A substance which does not readily allow the passage of heat or sound.
