Compare resistance when wire a is 30 m and 2 cm diameter and wire b is 10m and 1 cm in radii
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A component is connected to a d.c. supply. ... 4.0 cm 0.60 cm 0.80 cm The metal has a resistivity of 4.3 × 10–4 Ω m. a The resistance of ... The internal radius of the tube is 1.4 ....
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