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