Ncert- class6- science-Chapter 9: Electricity and Circuits 2 Welcome to your Ncert- class6- science-Chapter 9: Electricity and Circuits 2 1. Electric current cannot flow through Wood Silver None of these Copper None 2. What is false in an ideal Electrical Circuit Internal Resistance of battery is zero Wires are heated EMF of cell remains same Resistance of connecting wires is zero None 3. A bulb rated 240 V, 100 W is connected to a 120V supply. What can be inferred? The bulb lights up initially and then it fuses The bulb lights up but it is dim The bulb lights up to normal brightness The bulb fuses None 4. What happens to a circuit when the switch is off? Electricity flows continuously The circuit is complete The circuit is now an open circiut Electricity flows discontinuously None 5. The substance which allows electric current to flow through it is called Insulator Semiconductor Conductor None of these None 6. Electric energy is produced from the ............ stored inside the cell. Chemicals Transistor Insulator None of these. None 7. The path along which electric current flows is called conduct insulator resistor electric circuit None 8. Why is a fuse used in an electrical appliance? To protect the appliance and its cable To change the current rating of the appliance To earth the appliance To change the efficiency of the appliance None 9. Conducting wires in a circuit are usually made up of Fiber Iron Magnet Copper None 10. Which of the following devices can be used to break an electric circuit: Bulb None of these Switch Cell None 11. Some matters do not allow the electricity to pass through it. What is called a matter which does not allow the electricity to pass though it? Conductor Insulator All of these Semiconductor None 12. In which circuit will the bulb or bulbs glow the brightest? A simple circuit with one bulb and two cells A simple circuit with one bulb and one cell A simple circuit with two bulbs and one cell A simple circuit with two bulbs and two cells None 13. If we touch a naked current carrying wire, we get a shock. This is because our body is a : insulator of electricity source of electricity both B&C conductor of electricity None 14. Which one of the following will not conduct electricity? graphite CuSO4 solution solid NaCl acidified water None 15. Nidhi has two bulbs connected across two cells in a simple circuit. How can she make the bulbs glow dim? Replace one bulb with a piece of wire Replace one cell wtih a piece of wire Replace one cell with a piece of chalk Replace one bulb with another cell None 16. Substances which allow electricity to pass through them are known as None of these Both conductors & insulators Electrical insulators Electrical conductors None 17. What type of energy transformation occurs in a dry cell ? potential to electrical energy electrical to thermal energy chemical to electrical energy electrical to light energy None 18. Human body is a semiconductor poor conductor of electricity good insulator good conductor of electricity None 19. What happens to a circuit when the switch is off? The circuit is complete Electricity flows discontinuously There is a gap in the circuit Electricity flows continuously None 20. Substances that do not allow free flow of charge through them are called Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
