level: Topic 1 1: Circuit symbols
Questions and Answers List
level questions: Topic 1 1: Circuit symbols
| Question | Answer |
|---|---|
| What happens when a switch is closed? | It will allow currents to flow through it |
| What happens when a switch is open? | It will no longer allow current to flow through |
| What is the positive side of the cell or battery? | The long side |
| What is the negative side of a cell or battery? | The short side |
| What is a battery? | Two or more cells formed together |
| What is an indicator lamp? | A lamp consisting of light that turns on depending on whether power is on |
| What is a bulb? | A lamp that provides light |
| What is a diode? | A device that only allows current to flow in one direction |
| What is an LDR? | Light-emitting diode |
| What is the job of a resistor? | Anything that can reduce the flow of current in a circuit |
| What is a cell? | Pushes current around a circuit |
| What is a variable resistor? | It can be used to change the resistance of a variable resistor |
| What is a thermistor? | A resistor with values changes with temperature |
| What is a LDR? | Light dependent resistor |
| What is the job of an ammeter? | Measures the current of the circuit |
| What is a voltmeter? | Measures the potential difference of the circuit |
| What is the function of a fuse? | Sets a maximum value on the current that flows through a circuit |