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The graph below shows the variation of current density ( ) with electric field ( ) applied to two…
The graph below shows the variation of current density ($J$) with electric field ($E$) applied to two different metallic wires A and B.
(a)
Which one of the wires, A or B, has higher resistivity?
(b)
For a certain value of electric field ($E$), in which wire ‘A’ or ‘B’ is drift velocity greater? Give a reason for your answer.
Answer
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From ISC 2025 Physics Paper 1, question 10(ii).