Let's take a current-carrying cable with a gradually narrowing cross-sectional area along the length of...
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Let's take a current-carrying cable with a gradually narrowing cross-sectional area along the length of the wire so thewire turns into the shape of a very long, truncated cone. How does the drift speed (va) vary along the length of the wire?Ova first increases and then goes down after it reaches to a critical value.Ova remains the same regardless the cross section of the cable.O It speeds up with the lengthO It slows down with the length of the cable
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