Flashcards
DYNAMIC ELECTRICITY TEST
Flashcards do conjunto (24)
- 1What is electricityAll phenomena caused by positive and negative charges
- 2DO LIKE CHARGES REPEL OR ATTRACTREPEL
- 3DO OPPOSITE CHARGES REPEL OR ATTRACTATTRACT
- 4Where do electric charges come fromthey come from the protons and electrons in atoms
- 5How do electrons transferThe valence electrons are transferred from one atom to another
- 6What do negatively charged objects haveA surplus of electrons (more electrons than protons)
- 7What do positively charged objects haveA deficit of electrons
- 8What is the symbol for electric chargeQ
- 9What is dynamic electricityAny phenomena related to electric charges in motion (in an electric circuit)
- 10What is an electric circuitA closed path for electricity to circulate which includes an energy supply and at least one motion
- 11What is an electric currentIs the orderly movement of negative charges created by electrons
- 12What is the conventional current directionThe 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
- 13What is current intensity, symbol and measure unitNumber of charges that flow past a given point in an electric circuit every second. Symbol: I measure unit: A (ampere).
- 14Determining electric current (formula)I = Q / delta t
current intensity = charge/time interval - 15Potential differencePotential difference (voltage symbolized by V) is the quantity of energy transferred between two points in an electric circuit
- 16How does potential difference affect the energy transferredThe greater the potential difference, the greater the energy transferred
- 17Formula for potential difference and determining it1V = 1J/1Q
V = E/Q
Potential difference = energy transferred/charge - 18Device used to measure potential difference and how is it connected in a circuitVoltmeter. Connected across the terminals of a circuit element (IN PARALLEL)
- 19What does a battery doConverts chemical energy to electrical energy
- 20What does a generator doConverts mechanical energy into electric energy
- 21What does a power supply doA device capable of generating electrical energy
- 22What is resistance/resistorsLower the amount of energy carried by the electrons
- 23What is electrical resistanceThe ability to hinder the flow of an electric current.
- 24Relationship between current intensity and resistorsResistors