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How much force per unit length acts on a long current carrying conductor X due to a current flowing…
(i)
How much force per unit length acts on a long current carrying conductor X due to a current flowing through another similar conductor Y, kept parallel to it in vacuum? (Derivation of the formula is not required.)
(ii)
Use this expression to define an ampere.
Answer
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From ISC 2025 Improvement Physics Paper 1, question 5.