tsl133 - 12mA 12mA (a) (b) 1 2 1 2 What is the current...

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Electric Current Application (1) A steady current I is flowing through a wire from left to right. The wire first doubles its diameter and then splits into two wires of the original diameter. Both branches on the right carry the same current. 2cm 4cm 2cm 2cm I 1 I 2 I 3 I 4 Rank the current densities J 1 , J 2 , J 3 = J 4 in the three segments. tsl133 – p.1/3
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Electric Current Application (2) Two wires are formed into (a) an equilateral triangle, (b) a regular pentagon. A voltage between points 1 and 2 produces a current of 12mA along the shorter path.
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Unformatted text preview: 12mA 12mA (a) (b) 1 2 1 2 What is the current along the longer path in each case? tsl137 p.2/3 Electric Current Application (3) Consider three wires made of the same material. Wire 1 of length 2m and diameter 2mm has a resistance 18 . (a) What resistance does wire 2 of length 4m and diameter 4mm have? (b) How long is wire 3 of diameter 6mm with a resistance of 18 ? tsl147 p.3/3...
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tsl133 - 12mA 12mA (a) (b) 1 2 1 2 What is the current...

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