1) Who discovered the magnetic effect of electricity ? a) Sir Isaac Newton b) Hans Christian c) Leonardo Da Vinci 2) Protons are : a) Positively charged b) Negatively charged c) none 3) The rate of flow of charge through an electric circuit . a) Current b) Electrons c) Speed 4) Symbol of Battery a) b) c) 5) Which of the following is not an insulator ? a) Optic fibre b) Wood c) Aluminium d) Bakelite 6) The force that keeps electrons in orbit in an atom . a) Electrostatic force b) Nuclear force c) Magnetic force 7) SI unit for current a) Kilogram b) Ampere c) Volt 8) The coil in a geyser is made up of : a) Nichrome b) Tungsten c) Rubber 9) The fuse wire is made of : a) Iron and copper b) Aluminium and silver c) Tin and lead 10) A property of many substances that is associated with heat , light , electricity mechanical motion and sound . a) Energy b) Sonorous c) Ductile 11) Generators work on the principle of : a) Resistance b) Heating Effect of Electricity c) Electromagnetism 12) A closed path or loop that is needed by electricity to flow a) Battery b) Circuit c) Rope

Electricity

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