Author Question: Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is ... (Read 38 times)

s.tung · **on:** Jul 29, 2018

Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nichrome is 100 10-8 m.)

A)

17.5 A
B)

30.9 A
C)

61.8 A
D)

0.388 A
E)

0.776 A

Question 2

What is the net power that a person with surface area of 1.20 m2 radiates if his emissivity is 0.895, his skin temperature is 300 K, and he is in a room that is at a temperature of 290 K? The Stefan-Boltzmann constant is 5.

67 10-8 W/(m2K4). A)

60.3 W

B)

62.6 W

C)

65.7 W

D)

68.4 W

E)

64.8 W