A straight wire of diameter0.5 mm carrying acurrent of 1 A is replaced by another wire of 1 mmdiameter carrying same currentThe strength ofmagnetic field far away is [1995 - 97 - 99]

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A straight wire of diameter0.5 mm carrying acurrent of 1 A is replaced by another wire of 1 mmdiameter carrying same currentThe strength ofmagnetic field far away is [1995 - 97 - 99]