Ncert- class6- science-Chapter 9: Electricity and Circuits 1 Welcome to your Ncert- class6- science-Chapter 9: Electricity and Circuits 1 1. An electric cell has terminals. 2. In a circuit having one bulb, another bulb is added in series with another. Then the bulbs will : Not glow glow but less brigtly glow more brightly get fused None 3. When the chemicals in the electric cell are used up, the electric cell stops working. Then, what should we do? Both options are correct The electric cell has to be replaced with a new one All options are wrong We should keep using the same electric cell None 4. If the switch is connected to a bulb and the battery is kept in the on position what do you observe? None of the above The bulb will glow Cannot say The bulb remains off None 5. Paheli is running short of connecting wires. To complete an electric circuit. she may use a Steel spoon. Glass bangle. Thick thread. Rubber pipe. None 6. The thin wire that gives off light is called the of the bulb. 7. In an open electric circuit the path of electric current is not broken the path of electric current is completely broken none of these the path of electric current is partially broken None 8. When a switch is in OFF position,i) Circuit starting from the positive terminal of the cell stops at the switch.ii) Circuit is open.iii) No current flows through it.iv) Current flows after some time.Choose the combination of correct answer from the following. all are correct (ii) and (iii) are correct only (i) and (ii) are correct only (iv) is correct None 9. Why shouldnt the two terminals of an electric cell be joined directly without a switch? Electric cell will explode None of them It is dangerous The chemicals in the electric cell get used up very fast and the cell stops working None 10. The terminals of an electric cell are _________ and __________. Positive and Positive None of them Positive and Negative Negative and Negative None 11. Two cells of each I5 V and third cell of 1 V arc connected in series. Find the battery voltage. None of these 31 V 30 V I5 V None 12. The metal cap and metal disc on an electric cell are _________ and _________ respectively. Positive terminal' and 'Positive terminal' Negative terminal' and 'Positive terminal' Positive terminal' and 'Negative terminal' Negative terminal' and 'Negative terminal' None 13. Which among the following statements about an electric cell is false? It has a positive terminal. It has a negative terminal. An electric cell produces electricity from the chemicals stored inside it. It has a neutral terminal. None 14. Which is not a component of electric cell ? contact nut magnetic needle coil strip of iron None 15. The components required to make a simple series circuit to light a bulb are Cell and switch Bulb and wires Wires and cell Both B and C None 16. Three 100 W light bulbs are connected in series to a 220 V power source.If two of the light bulbs are replaced by 60 W bulbs the brightness of the remaining 100 W bulb is The same brightness as it was before Will not illuminate Dimmer than it was before Brighter than it was before None 17. Electric cells are used in All of the above Wrist watches Alarm clocks Cameras None 18. Bulbs of rating 60W, 220V and 250W, 220V are connected in series and their combination is connected to 440 V supply. Which bulb will fuse? Both Neither 60W 250 W None 19. _______________ makes it possible to light our homes, roads, offices, markets and factories even after sunset. Electricity Motion of objects Food Magnets None 20. Why are switches/keys used in a circuit? To protect the system All of above To control a device To save power 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.
