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A Ribbon of Nichrome (Resistivity = 1 Ω\varOmega ·M)with a Rectangular Cross Sectional Area of (0

Question 68

Multiple Choice

A ribbon of nichrome (resistivity = 1.00 * 10-6 Ω\varOmega ·m) with a rectangular cross sectional area of (0.25 mm * 1.00 mm) will be used as a heating element in a toaster.How long should this ribbon be,if the total resistance is intended to be 1.5 Ω\varOmega ?


A) 1.24 cm
B) 2.79 cm
C) 12.4 cm
D) 21.9 cm
E) 37.5 cm

Correct Answer:

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