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Question
How is the current flowing in a conductor changed if the resistance of conductor is doubled keeping the potential difference across it the same?
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Solution
V = IR or, I = `"V"/"R"`….(i)
If R is doubled,
Then, I' = `"V"/(2"R")` = `"I"/2"`……………(ii)
From (i) and (ii), it is clear that current will be halved.
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