What are the three main components of an atom?, Electrons, protons, and ions, Electrons, protons, and ions, Protons, neutrons, and electrons, Electrons, neutrons, and atoms, Which subatomic particle has a positive charge?, Electron, Proton, Neutron, Ion, Which subatomic particle has no charge?, Electron , Proton, Neutron, Ion, What is the movement of electrons from one atom to another known as?, Static electricity, Magnetism, Electrical current, Voltage, What is the term used to describe the flow of electricity from positive to negative, a historical assumption?, Electron flow, Actual current, Conventional current, Ampere flow, What is a key characteristic of materials that are good conductors of electricity?, Tightly bound electrons, Very few electrons, An abundance of free electrons, High resistance, What is a key characteristic of materials that are good insulators of electricity?, An abundance of free electrons, Very few free electrons, Low resistance, High conductance, What unit is used to signify electrical charge?, Ampere, Coulomb, Volt, Ohm, Which of the following materials is described as the best conductor?, Silver, Gold, Aluminium , Water, Which of the following is a reason why aluminium is used in overhead power cables?, It is the best conductor, It has very low resistance, It resists corrosion, It is lighter than copper, Combining which two metals should be avoided due to galvanic reaction and corrosion?, Gold and aluminium, Silver and gold, Copper and aluminium, Silver and copper, Which of the following is a common insulator used in domestic cables?, Aluminium , Gold, Thermoplastic PVC, Silver, What are the three main effects of passing an electrical current through a conductor?, Heat, light, and sound, Heat, magnetism, and chemical, Light, magnetism, and chemical, Sound, magnetism, and heat, The operating principle of a fuse relies on which effect of an electrical current?, Magnetic effect, Heating (thermal) effect, Chemical effect, Volt drop, What term describes the reduction in voltage across a conductor in an electrical circuit?, Resistance , Current reduction , Volt drop, Power factor improvement, What does the atomic number of an element represent?, The number of neutrons in the nucleus, The total number of particles in the atom, The number of protons in the nucleus, The weight of the atom, What is the role of neutrons in an atom?, To provide energy to the atom, To hold protons together in the nucleus, To create the electron cloud, To increase the atomic number.

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