Defence Exam > Defence Questions > Two wires are made having same length and are...
Start Learning for Free
Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?
- a)The resistance of wire 1 will be higher than that of wire 2.
- b)The resistance of wire 2 will be higher than that of wire 1.
- c)The resistance of both the wires will be the same.
- d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Two wires are made having same length and area of cross-section A. Wir...
- As it is given in the question that electrical conductivity of wire 1 i.e. made up of copper is greater than wire 2 i.e. made up of aluminium.
- Electrical conductivity is inversely proportional to the resistance. So, the resistance of wire 2 will be higher than that of wire 1.
Most Upvoted Answer
Two wires are made having same length and area of cross-section A. Wir...
Resistance of Wire 1 vs Resistance of Wire 2
The resistance of a wire is determined by its resistivity, length, and cross-sectional area. Since both wires have the same length and area of cross-section, the only factor that affects their resistance is their resistivity. The resistivity of a material is a measure of how strongly it opposes the flow of electric current.
Effect of Electrical Conductivity
Electrical conductivity is the reciprocal of resistivity, meaning that a higher electrical conductivity corresponds to a lower resistivity. The given information states that the electrical conductivity of copper is higher than that of aluminium. Therefore, copper has a lower resistivity compared to aluminium.
Implication on Resistance
Since copper has a lower resistivity, it means that wire 1 (made of copper) will have a lower resistance compared to wire 2 (made of aluminium). This implies that the resistance of wire 2 will be higher than that of wire 1.
Power Dissipation
The power dissipated in a wire is given by the equation P = I^2 * R, where P is power, I is current, and R is resistance. If the same current is flown through both wires, the power dissipated in each wire will depend on their respective resistances. Since wire 2 has a higher resistance, it will dissipate more power compared to wire 1. Therefore, option 'D' is incorrect.
Conclusion
In conclusion, the correct statement is that the resistance of wire 2 will be higher than that of wire 1 (option 'B'). This is due to the fact that copper, which wire 1 is made of, has a higher electrical conductivity compared to aluminium, which wire 2 is made of.
The resistance of a wire is determined by its resistivity, length, and cross-sectional area. Since both wires have the same length and area of cross-section, the only factor that affects their resistance is their resistivity. The resistivity of a material is a measure of how strongly it opposes the flow of electric current.
Effect of Electrical Conductivity
Electrical conductivity is the reciprocal of resistivity, meaning that a higher electrical conductivity corresponds to a lower resistivity. The given information states that the electrical conductivity of copper is higher than that of aluminium. Therefore, copper has a lower resistivity compared to aluminium.
Implication on Resistance
Since copper has a lower resistivity, it means that wire 1 (made of copper) will have a lower resistance compared to wire 2 (made of aluminium). This implies that the resistance of wire 2 will be higher than that of wire 1.
Power Dissipation
The power dissipated in a wire is given by the equation P = I^2 * R, where P is power, I is current, and R is resistance. If the same current is flown through both wires, the power dissipated in each wire will depend on their respective resistances. Since wire 2 has a higher resistance, it will dissipate more power compared to wire 1. Therefore, option 'D' is incorrect.
Conclusion
In conclusion, the correct statement is that the resistance of wire 2 will be higher than that of wire 1 (option 'B'). This is due to the fact that copper, which wire 1 is made of, has a higher electrical conductivity compared to aluminium, which wire 2 is made of.
|
Explore Courses for Defence exam
|
|
Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer?
Question Description
Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer?.
Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Defence.
Download more important topics, notes, lectures and mock test series for Defence Exam by signing up for free.
Here you can find the meaning of Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Two wires are made having same length and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?a)The resistance of wire 1 will be higher than that of wire 2.b)The resistance of wire 2 will be higher than that of wire 1.c)The resistance of both the wires will be the same.d)If same current is flown through both the wires, the power dissipated in both the wires will be the same.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Defence tests.
|
|
Explore Courses for Defence exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup