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