For the Assertion A and Reason R given below choose the correct alternative from the following
A : Copper is used to make electric wire
R : Copper has very low electric resistance
A : Copper is used to make electric wire
R : Copper has very low electric resistance
- Both A and R are true and R is the correct explanation of A
- Both A and R are true and R is not the correct explanation of A
- A is true, R is false
- A is false, R is true
The Correct Option is A
Solution and Explanation
To analyze the given assertion (A) and reason (R), we need to understand their meanings and how each relates to the other:
Assertion (A): Copper is used to make electric wires.
Reason (R): Copper has very low electric resistance.
Let's evaluate both statements:
-
Truth of Assertion (A): Copper is indeed widely used in the manufacturing of electrical wires. This is a factual statement as copper is a common choice for electrical wiring due to its excellent electrical conductivity.
-
Truth of Reason (R): Copper indeed has very low electrical resistance which facilitates the efficient flow of electric current. This property makes it highly suitable for use in electrical applications.
Explanation: The reason provided (R) directly explains why copper is used for electrical wires. The low electrical resistance of copper means that it can conduct electricity with minimal energy loss. In turn, this minimizes power loss over the length of the wire and increases its efficiency for electrical wiring applications, making R the correct explanation for A.
Thus, both statements are true, and R is the correct explanation of A.
Conclusion: The correct answer is: Both A and R are true and R is the correct explanation of A.
Top Questions on Assertion and Reason
On the night of October 12th, the "Sunburst Medallion" was stolen from the highly secured display case in the city museum. The theft occurred sometime between the museum closing at 10:00 PM and the night guard, Mr. Hemant, completing his final round at 1:00 AM. Three primary suspects were identified, all of whom had recently been dismissed from their museum positions: Anjali, the former curator; Bharat, the former security expert; and Chitra, the former exhibits designer.
Here are the established facts and their alibis:
- The security system logs show that the display case was opened using a specific five-digit code, which only Anjali and the museum director (who was out of the country) knew.
- Bharat's alibi is that he was at a distant relative's birthday party from 8:00 PM to 1:30 AM. Multiple independent witnesses confirmed his presence throughout the entire period.
- Chitra's alibi is that she was working late at a downtown graphic design studio. A time-stamped security camera from the studio's entrance shows her entering at 7:00 PM and exiting at 11:45 PM. The studio is a 20-minute drive from the museum.
- Mr. Hemant, the night guard, stated he checked the medallion at 10:30 PM, and it was still there.
Further investigation revealed that a small, distinctive silver button was found near the display case. Anjali is known to frequently wear a coat with similar unique silver buttons. The security expert, Bharat, had previously boasted that he could remotely disable a certain type of magnetic lock—the same type used on the medallion's case—without needing the code, though the log suggests the code was used. (269 words)
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