ElectricityVersion en ligne Basics par Henar Aguado 1 Resistivity of a wire depends on a Material b Length c Colour d Cross section area 2 Which of the following circuit configurations has the same amount of voltage drop across each of its components? a series b parallel c series-parallel d combination series parallel 3 A material that lets electricity pass through it is called ... a an electrical conductor b an electrical insulator c an electrical appliance d an electrical battery 4 A material that does NOT let electricity pass through it is called ... a an electrical conductor b an electrical insulator c an electrical appliance d an electrical battery 5 Which of the following materials is an electrical conductor? a wood b metal c plastic d glass 6 Which of the following materials is an electrical insulator? a iron b silver c aluminium d rubber 7 In which circuit will the bulb or bulbs glow brightest? a A simple circuit with one bulb and one battery b A simple circuit with two bulbs and one battery c A simple circuit with one bulb and two batteries d A simple circuit with three bulbs and one battery 8 Ruby makes a complete simple circuit with one bulb and three batteries. The bulb lights for an instant and then goes out. Why? a Not enough electricity flows around the circuit b Too much electricity flows through the bulb's filament c The batteries are flat d The batteries are thin 9 Why is electrical wiring usually made from copper? a Because copper is shiny b Because copper conducts electricity c Because copper is not magnetic d Because copper is magnetic 10 Why is electrical wiring usually covered with a layer of plastic? a To make it look pretty b To help electricity flow along the wire c To make it long d To make it safe
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