Siddharth Singhania
Last Activity: 14 Years ago
We can say that,U is proportional to i2 because resitanceR of a particular material and time taken can be kept constant.
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however,"v" and "i" are proportional to each other and so when "v" changes "i" changes, so it cannot be considered as a constant term
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therefore, U is not proportional to i
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