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A current I flows along the length of an infinitely long straight thin walled pipe. Then
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Correct option is C
Consider a circular loop of radius r inside the tube. Then net current inet enclosed by the loop is zero. From the equation ∮B→.dl→=μ0inet⇒∮B→.dl→=0⇒B.2πr=0⇒B=0Talk to our academic expert!
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Magnetic induction on the surface of a long current carrying wire of radius R is 8 µT. Then magnetic induction at a distance R/4 from the axis of the conductor is
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