16507813
Description
| Question | Answer |
| What is electricity | All phenomena caused by positive and negative charges |
| DO LIKE CHARGES REPEL OR ATTRACT | REPEL |
| DO OPPOSITE CHARGES REPEL OR ATTRACT | ATTRACT |
| Where do electric charges come from | they come from the protons and electrons in atoms |
| How do electrons transfer | The valence electrons are transferred from one atom to another |
| What do negatively charged objects have | A surplus of electrons (more electrons than protons) |
| What do positively charged objects have | A deficit of electrons |
| What is the symbol for electric charge | Q |
| What is dynamic electricity | Any phenomena related to electric charges in motion (in an electric circuit) |
| What is an electric circuit | A closed path for electricity to circulate which includes an energy supply and at least one motion |
| What is an electric current | Is the orderly movement of negative charges created by electrons |
| What is the conventional current direction | The direction in which a positive particle would flow in an electric circuit. In an electric circuit, electrons flow from the positive to the negative terminal of the power supply |
| What is current intensity, symbol and measure unit | Number of charges that flow past a given point in an electric circuit every second. Symbol: I measure unit: A (ampere). |
| Determining electric current (formula) | I = Q / delta t current intensity = charge/time interval |
| Potential difference | Potential difference (voltage symbolized by V) is the quantity of energy transferred between two points in an electric circuit |
| How does potential difference affect the energy transferred | The greater the potential difference, the greater the energy transferred |
| Formula for potential difference and determining it | 1V = 1J/1Q V = E/Q Potential difference = energy transferred/charge |
| Device used to measure potential difference and how is it connected in a circuit | Voltmeter. Connected across the terminals of a circuit element (IN PARALLEL) |
| What does a battery do | Converts chemical energy to electrical energy |
| What does a generator do | Converts mechanical energy into electric energy |
| What does a power supply do | A device capable of generating electrical energy |
| What is resistance/resistors | Lower the amount of energy carried by the electrons |
| What is electrical resistance | The ability to hinder the flow of an electric current. |
| Relationship between current intensity and resistors | Resistors |
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