The resistance of a 5m length of wire is 600 ohms. the length of the s

1.	The resistance of a 5m length of wire is 600 ohms. the length of the same wire when the resistance is 420 Ω
Answer» ANSWER: Can't be solved. Explanation: Why? Because the area of that WIRE is not given here. We KNOW, R = dL/A (here d = DENSITY) When you change the length. It also affects A (Area). [ Because the VOLUME of that wire always remains the same] But A is not specified in the question. So, this question has no valid answer. Hope you have understood.

The resistance of a 5m length of wire is 600 ohms. the length of the same wire when the resistance is 420 Ω

Answer»

Can't be solved.

Explanation:

Why? Because the area of that WIRE is not given here.

We KNOW, R = dL/A (here d = DENSITY)

When you change the length. It also affects A (Area). [ Because the VOLUME of that wire always remains the same]

But A is not specified in the question. So, this question has no valid answer.

Hope you have understood.