Physics Electricity CBSE Board 2026 Medium
(i) Due to change in length and area of cross-section of a conductor, resistance of conductor changes while r…
- (i)Due to change in length and area of cross-section of a conductor, resistance of conductor changes while resistivity does not change. Why ?
- (ii)Conductors of electric toasters and electric iron are made of an alloy rather than a pure metal. Why ?
- (iii)Define the S.I. unit of electric current.
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