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