# GCSE physics ocr circuits and resistors

GCSE physics revision of circuits and resistors

• Created by: harry
• Created on: 02-04-13 12:03
What is Current?
The flow of charge (electrons) round the circuit
1 of 6
What is voltage?
The driving force that pushes the current around
2 of 6
What is resistance?
Anything in a circuit that reduces the current
3 of 6
How is resistance caused in a conductor?
In a metal conductor the electrons collide with the metal atoms causing the atoms to vibrate.
4 of 6
In a variable resistor, if you increase the resistance what happens to the current?
The current drops
5 of 6
In a variable resistor, if you decrease the resistance what happens to the current?
The current goes up
6 of 6

## Other cards in this set

### Card 2

What is voltage?

#### Back

The driving force that pushes the current around

### Card 3

#### Front

What is resistance?

### Card 4

#### Front

How is resistance caused in a conductor?

### Card 5

#### Front

In a variable resistor, if you increase the resistance what happens to the current?