1.In a closed circuit, the direction of flow of electric current is(a) from negative to positive terminal(b) from positive to negative terminal(c) in both the above directions(d) None of the above2. The part of electric current wasted while flowing through a circuit is(a) sound energy(b) chemical energy(c) heat energy(d) nuclear energy3.Which of these appliances in your house is not run by electricity?(a) computer(b) Gas burner(c) Music system(d) Air conditioner4. Which of these will generate electric current, when kept in sunlight but not when kept in the dark?(a) Dry cell(b) Car battery(c) Solar cell(d) Button cell5. Which of the following controls the closing and opening of a circuit?(a) Bulb(b) Cell(c) Switch(d) None of these6. The filament of an electric bulb is made up of this metal.(a) iron(b) Tungsten(c) Copper(d) All of these7. The glass case of an electric bulb is filled with this gas.(a)Oxygen(b) Argon(c) Nitrogen(d) none of these8. Which of the following is an insulator?(a) Brass oppon(b) Silver jewellery(c) Steel spoon(d) Plastic jug10. Which of the following is a conductor of electricity?(a) pure water(b) Pencil lead(c) Air(d) None of these​