Physics-10th Electricity CBSE Board 2025 Medium
(i) Define the term electric power. Express it in terms of potential difference (V) and resistance (R). (ii)…
- (i)Define the term electric power. Express it in terms of potential difference (V) and resistance (R).
- (ii)The resistance of a metal wire of length 6 m is . If the area of cross-section of the wire is , calculate the electrical resistivity of the material of the wire. How would the resistivity be affected if this wire is gradually stretched so that its length is doubled ? Justify your answer.
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