Discussion
Assertion (A) : Copper is used to make electric wires.
Reason (R) : Copper has very low electrical resistance.
Answer: A
Correct answer: Both A and R are true and R is the correct explanation of A.
Copper has a very low resistivity, second only to silver among common metals, so it carries current with little loss as heat - and it is far cheaper than silver. That low resistance is exactly why it is chosen for wiring. Both are true and R explains A.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development