| what is electricity? | the movement of charged particles |
| what kind of charges can charged particles have? | positive
negative
neutral/no charge |
| what is static electricity? | the build up of charge on insulating materials |
| do opposite charges attract or repel? | attract |
| do like charges attract or repel? | repel |
| explain what happens when a ballon sticks to a wall due to static electricity | when you rub a balloon on cloth, the balloon loses electrons to become positively charged.
When a balloon is held against a neutral wall, the electrons in the wall are attracted to the positive balloon,
and that force of attraction keeps the balloon sticking to the wall. |
| how is static electricity used in industrial chimneys to prevent pollutants entering the atmosphere? | exhaust particles are often charged after burning
charged panels along the inside of the chimney can attract these charged exhaust particles and prevent them from leaving |
| what is the symbol for charge? | Q |
| what is charge measured in? | Coulombs
C |
| What does charge refer to? | amount of electricity |
| what is an electric field | a region where charges experience an electric force |
| what is this diagram called? | electric field diagram |
| what does the line spacing on this diagram represent? | the strength of the electric field.
closer the lines, the stronger the electric field |
| what do the arrows on this diagram represent? | the direction a positive charge would experience a force |
| in which direction would a positive charge move in diagram one? | away from the point charge along a straight line from the centre |
| in which direction would a negative charge move in diagram one? | towards the centre, changing direction until it was going along one of the straight lines |
| where is the electric field strongest in the second picture? | the space between both charges |
| what is electrical current | charge transferred per unit time
when charges move along a field line |
| what is the symbol for current? | I |
| what is current measured in? | Amps / Amperes |
| What is one Ampere equal to | 1 coulomb/1second
1Cs-1 |
| what is the formula for charge? | Q=It |
