The figure 4 below shows three conductors made from the same material and have different cross-sectional...
[VI] The figure shows three wires, made of the same material, with their cross-sectional areas and lengths. The resistance of each wire is as labeled in the figure. Which of the following statements is correct? L 1.5L L/2 AR A/2 R A/2 O Ri=R2 = R3 OR] >R2>R3 OR1 = R2>R3 OR2>R1 = R3
The resistance ratio of two conductors that have equal cross-sectional areas and equal lengths is 1:7. What is the ratio of the resistivity's of the materials from which they are made? Find the ratio of the greater resistivity to the lower one. (Express your answer to one significant figure.)
The figure below shows four heat conductors made of the same type of material. Choose the correct arrangement for the heat conductors (using the letters) to their thermal conductivity from large to small (i.e. from large thermal conductivity to small thermal conductivity). (D) > (A) > (B) > (C) (C) > (A) > (D) > (B) (B) > (C) > (D) > (A) (A) > (D) > (C) > (B) (A) > (D) > (B) > (C) (D) > (B)...
Three cylindrical wires are made of the same material. Their lengths and radii are wire 1: length 2ℓ, radius r/2 wire 2: length 3ℓ, radius 3r wire 3: length ℓ, radius r/4 (a) Rank the wires according to their resistances, greatest first Select one: a. 1>2>3 b. 1 =2>3 c. 3>1>2 d. 1>3>2 e. 3>2>1(b) Rank the wires according to the current density across their cross sections, greatest first Select one: a. 3>1>2 b. 1>3>2 c. 1=2>3 d. 3>2>1 e. 1>2>3
Three cylindrical wires are made of the same material. Their lengths and radii are wire 1: length 2ℓ, radius r/2 wire 2: length 3ℓ, radius 3r wire 3: length ℓ, radius r/4 (a) Rank the wires according to their resistances, greatest first Select one: a. 1>2>3 b. 3>2>1 c. 1>3>2 d. 3 >1>2 e. 1=2>3(b) Rank the wires according to the current density across their cross sections, greatest first Select one a. 3>1>2 b. 1>2>3 c. 1 =2>3 d. 3>2>1 e. 1>3>2
Three cubes are made from the same material. As the drawing indicates, they have different sizes and temperatures. Rank the cubes according to the radiant energy they emit per second, largest first. 3 2T 0 0 Lo 4To 0
Three cylindrical wires are made of the same material. Their lengths and radii are wire 1: length ℓ, radius 2r wire 2: length 2ℓ, radius r/2 wire 3: length 4ℓ, radius r/3 (a) Rank the wires according to their resistances, greatest first. Select one: a. 1>2>3 b. 3>2>1 c. 2>3>1 d. 1=2>3 e. 1>3>2(b) A potential difference V is applied across the length of the wires. Rank them according to the current density across their cross sections, greatest first. Select one: a. 1 = 2 >3 b.1>3>2 c. 1>2>3 d. 3>2>1 e. 2>3 >...
Three cylindrical wires are made of the same material. Their lengths and radii are wire 1: length 24, radius r/2 wire 2: length 34, radius 3r wire 3: length , radius r/4 (b) Rank the wires according to the current density across their cross sections, greatest first Select one O a. 1>3>2 O b. 1 =2> 3 c.3>1 > 2 O d. 3 > 2>1 O e. 1>23
Not yet answered Three cylindrical wires are made of the same material. Their lengths and radii are wire 1: length 21, radius r/2 wire 2: length 31, radius 3r wire 3: length , radius r/4 (b) Rank the wires according to the current density across their cross sections, greatest first Select one: O a. 3 > 2>1 O b. 1523 O c. 1>3>2 O d. 3 >1 > 2 e. 1>2> 3
Two copper wires have the same length but different cross sectional areas. The cross-sectional area of wire 1 is A, and that of wire 2 is 2A. How are the resistances of the two wires related? Choose the correct answer from the following choices. Wire 1 has four times the resistance of Wire 2 Wire 1 has half the resistance of Wire 2 The are the same. Wire 1 has twice the resistance of Wire 2