A rod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a material with a resistivity of 6.0 × 10−8 Ω ⋅ m. If a potential difference of 0.50 V is placed across the ends of the rod, at what rate is heat generated in the rod?
A)3.0 W
B)5.3 W
C)8.3 W
D)1.3 W
E)17 W

Question

Quizplus · Accepted Answer

The Answer of A rod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a material with a resistivity of 6.0 × 10−8 Ω ⋅ m. If a potential difference of 0.50 V is placed across the ends of the rod, at what rate is heat generated in the rod?
A)3.0 W
B)5.3 W
C)8.3 W
D)1.3 W
E)17 W

A Rod of 2