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- Question
Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes
Options- A. 2R
- B. R/2
- C. 5R/4
- D. 3R/4
- Correct Answer
- 5R/4
ExplanationSo, resistance of Wire 2 is R/4 as radius is half of wire 1, so area would be 4 times of wire 1.
Now for resistance in series. R= R1 + R2.
Therefore, Final R= R + R/4 = 5R/4
- 1. What is an FET?
Options- A. Farad Effect Transformer
- B. Field Effect Transformer
- C. Field Effect Transistor
- D. French Energy Transfer Discuss
- 2. The greatest variety of animal and plant species is fund in
Options- A. temperate grasslands
- B. tropical moist forests
- C. tundra regions
- D. in hot deserts Discuss
- 3. The members of the Rajya Sabha are elected for a term
Options- A. of six years
- B. determined by the state legislative assembly of a state
- C. of four years
- D. None of the above Discuss
- 4. The shallow seas found in the Atlantic basin include the
Options- A. Caribbean sea and Mediterranean
- B. Baltic and Arctic seas
- C. Gulf of Mexico
- D. All of the above Discuss
- 5. Coral reefs in India can be found in
Options- A. the coast of Orissa
- B. Waltair
- C. Rameshwaram
- D. Trivandrum Discuss
- 6. Which of the following is the lightest metal?
Options- A. Mercury
- B. Lithium
- C. Lead
- D. Silver Discuss
- 7. The first graphical browser for the WWW was named:
Options- A. Netscape
- B. Veronica
- C. Mosaic
- D. Explorer Discuss
- 8. What Designates where the next action occurs?
Options- A. Decode
- B. Highlight
- C. Select
- D. Mother board Discuss
- 9. 'Eight Lives' is a book written by
Options- A. Raja Ramana
- B. Savita Ambedkar
- C. Mahesh Yogi
- D. Raj Mohan Gandhi Discuss
- 10. In India the first television programme was broadcasted in
Options- A. 1959
- B. 1965
- C. 1976
- D. 1957 Discuss
More questions
Correct Answer: Field Effect Transistor
Correct Answer: tropical moist forests
Correct Answer: of six years
Correct Answer: All of the above
Correct Answer: Rameshwaram
Correct Answer: Lithium
Correct Answer: Mosaic
Correct Answer: Select
Correct Answer: Raj Mohan Gandhi
Correct Answer: 1959
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