Page 62 - CHAPTER-1 (Electricity)
P. 62
CHAPTER 1
ELECTRICITY
10. The SI unit of resistivity is ……… .
11. If the potential difference across the ends of a conductor is
doubled, the current flowing through it, gets ……… .
12. A voltmeter measures ..................... between two points.
13. An ammeter measures ..................... through a conductor.
14. Resistance increases in .....................combination.
15. Resistance decreases in ..................... combination.
16. In a series combination, resistance increases due to increase in
...................
17. In a parallel combination, resistance decreases due to increase in
.....................
18. Watt is the S.I. unit of electrical .....................
19. Joule is the S.I. unit of electrical .....................
20. In series combination, power .....................
21. In parallel combination, power .....................
22. Decrease of power of combination, is due to increase of .....................
23. Increase of power of combination is due to decrease of .....................
TRUE or FALSE!
1. 12 V means the work done to carry a unit charge from one point to
another is 12 joule. [True/False]
2. The equivalent resistance between two diametrically opposite
points as a wire of 10 Ω resistance is made a circle is 2.5 Ω.
[True/False]
3. When bulbs are connected in series, the lower power bulb glows
brighter. [True/False].
60
