-) The resistance of a 2 km length of cable of cross-sectional area 2 mm² and resistivity of 2 × 10 8 Q2. m is: (3) 0.02 Ω (b) 20 Ω (c) 0.02 mΩ (d) 200 £2 ) A coil of wire has a resistance of 10 52 at 0 °C. If the temperature coefficient of resistance for the wire is 0.004/°C, its resistance at 100 °C is: (a) 0.4 92 (b) 1.4 Ω (c) 14 Ω (d) 10 Ω ) A piece of graphic has a cross-sectional area of 10 mm². If its resistance is 0.1 £2 and its resistivity 10 × 108 2 m, its length is: (a) 10 km (b) 10 cm (c) 10 mm (d) 10 m

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
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4) The resistance of a 2 km length of cable of cross-sectional area 2 mm² and resistivity of 2 x 10
8 22. m is:
(a) 0.02 Ω
(b) 20 Ω
(c) 0.02 mΩ
(d) 200 £2
5) A coil of wire has a resistance of 10 2 at 0 °C. If the temperature coefficient of resistance for
the wire is 0.004/°C, its resistance at 100 °C is:
(a) 0.4 22
(b) 1.4 Ω
(c) 14 Ω
(d) 10 Ω
6) A piece of graphic has a cross-sectional area of 10 mm². If its resistance is 0.1 2 and its
resistivity 10 × 108 2 m, its length is:
X
(a) 10 km
(b) 10 cm
(c) 10 mm
(d) 10 m
Transcribed Image Text:4) The resistance of a 2 km length of cable of cross-sectional area 2 mm² and resistivity of 2 x 10 8 22. m is: (a) 0.02 Ω (b) 20 Ω (c) 0.02 mΩ (d) 200 £2 5) A coil of wire has a resistance of 10 2 at 0 °C. If the temperature coefficient of resistance for the wire is 0.004/°C, its resistance at 100 °C is: (a) 0.4 22 (b) 1.4 Ω (c) 14 Ω (d) 10 Ω 6) A piece of graphic has a cross-sectional area of 10 mm². If its resistance is 0.1 2 and its resistivity 10 × 108 2 m, its length is: X (a) 10 km (b) 10 cm (c) 10 mm (d) 10 m
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