Match the following:
The following table gives the lengths of four copper rods at the same temperature, their diameters, and the potential differences between their ends.
Rod | Length | Diameter | Potential Difference |
1 | L | 3 d | V |
2 | 2 L | d | 3 V |
3 | 3 L | 2 d | 2 V |
4 | 3 L | d | V |
Correctly match the physical quantities mentioned in the left column with the rods as marked.
Column I | Column II | ||
(A) | Greatest Drift speed of the electrons. | (P) | Rod 1 |
(B) | Greatest Current | (Q) | Rod 2 |
(C) | Greatest rate of thermal energy produced | (R) | Rod 3 |
(D) | Greatest Electric field | (S) | Rod 4 |
Text Solution
Verified by ExpertsCHECK THE SOLUTION.
– (Q), – (P), – (P), - (Q)
Sol. Drift speed V d = 
= 
i = 
where R = 
E = 
and P = I 2 R
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