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- Question
Two electric bulbs marked 25W ? 220V and 100W ? 220V are connected in series to a 440Vsupply. Which of the bulbs will fuse?
Options- A. 25 W
- B. Both
- C. 100 W
- D. Neither
- Correct Answer
- 25 W
ExplanationResistances of both the bulbs are
R1=V^2/P1 = 220^2/25
R2 = V^2/P2 = 220^2/100
Hence
When connected in series, the voltages divide in them in the ratio of their resistances. The voltage of 440 V devides in such a way that voltage across 25 w bulb will be more than 220 V. Hence 25 w bulb will fuse.
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Options- A. Ian Austin
- B. V.S. Naipaul
- C. Ben Okri
- D. Zola Emile Discuss
- 2. Tipu sultan was the ruler of
Options- A. Hyderabad
- B. Madurai
- C. Mysore
- D. Vijayanagar Discuss
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Options- A. Badminton
- B. Tennis
- C. Football
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Options- A. 1850s
- B. 1880s
- C. 1930s
- D. 1950s Discuss
- 6. The first metal used by man was
Options- A. iron
- B. copper
- C. gold
- D. bronze Discuss
- 7. Central Arid Zone Research Institute is located in
Options- A. Bihar
- B. Gujarat
- C. Rajasthan
- D. Madhya Pradesh Discuss
- 8. In the second nationalization of commercial banks, ___ banks were nationalized.
Options- A. 4
- B. 5
- C. 6
- D. 8 Discuss
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Options- A. Telangana
- B. Uttar Pradesh
- C. Bihar
- D. Karnataka Discuss
- 10. The association of the rupee with pound sterling as the intervention currency was broken in
Options- A. 1990
- B. 1991
- C. 1992
- D. 1993 Discuss
More questions
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Correct Answer: 1880s
Explanation:
The IEEE (Institute of Electrical and Electronics Engineers) was formed in 1963 by the merger of the Institute of Radio Engineers (IRE, founded 1912) and the American Institute of Electrical Engineers (AIEE, founded 1884).
Correct Answer: copper
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