Circle the letter of the correct statement. Write the answer in your paper with

Question

Circle the letter of the correct statement. Write the answer in your paper with calculations, drawing, rules or explanation for your answer. A) Two solid rods are made of the same material with the same thermal conductivity. They are insulated on their outer radius and have the same temperatures on either end, as shown. The diameter of rod A is twice that of rod B and the length of rod A is half that of rod B. a. The thermal resistances of the two rods are equal (R_B = R_A). b. The thermal resistance of rod B is 2 times that of rod A (R_B = 2 R_A). C. The thermal resistance of rod B is 4 times that of rod A (R_B = 4 R_A). d. The thermal resistance of rod B is 8 times that of rod A (R_B = 8 R_A). f. The thermal resistance of rod B is equal to the thermal resistance of rod A squared (R_B = 2 RA^2).

Explanation / Answer

The diameter of rod A is twice that of rod B and the length of rod A is half that of rod B

c.The thermal resistance of rod B is 4 times that of rod A(RB = 4 RA)

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