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Electricity
| Question | Answer |
|---|---|
| A build up of charge on an insulator is known as? | Static electricity |
| Insulators become charged by ............... between the cloth and object | Friction |
| Static electricity is found only on these? | Insulators |
| These allow current to flow through them? | Conductors |
| These prevent damage to buildings if hit by lightning? | Lightning rods |
| A lightning rod must be made of ............. as they allow electricity to flow through them | Metal |
| When Voltage is proportional to current at a fixed temperature this is known as? | Ohm's law |
| A straight line graph shows a .................... relationship? | Proportional |
| Unit of current | Amp |
| Unit of resistance | Ohm |
| Unit of voltage | Volt |
| Another word for voltage | Potential difference |
| This electrical quantity provides the force to push the electrons around a circuit? | Voltage |
| This is a measure of how difficult it is for electrons to flow in a circuit? | Resistance |
| A flow of electrons is known as the? | Current |
| The symbol for voltage? | V |
| The symbol for resistance is? | R |
| The symbol for current? | I |
| The formula used to calculate voltage? | V = IR |
| Current flows from this terminal to this terminal in a battery? | Positive to negative |
| The unit of energy consumption used by ESB? | kilowatt hour |
| Formula used to calculate the current used? | I = V/R |
| A device used to reduce the current flowing in a circuit? | Resistor |
| The type of circuit that when one bulb blows they all go out because circuit is broken? | Series |
| The type of circuit that when one one bulb blows the other stays lighting because two paths for current to flow in? | Parallel |
| Current that flows in one direction only? | Direct current |
| Current that is constantly changing direction? | Alternating current |
| The number of volts in the mains? | 230 |
| The type of current in the mains? | Alternating current |
| Electrolysis is an example of the ........... effect of an electric current? | Chemical |
| The use of a toaster or kettle uses the .......... effect of an electric current? | Heating |
| The electromagnet in a scrap yard uses the .......... effect of an electric current? | Magnetic |
| For current to flow the circuit must be? | Complete |
| A circuit breaker uses the .............. effect of an electric current? | Magnetic |
| A fuse uses the ............ effect of an electric current? | Heating |
| This is a safety device that breaks the circuit if its rating is exceeded because the wire inside of it melts? | A fuse |
Created by:
scienceatkcc
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