Two copper wires have the same length but different cross sectional areas. The cross-sectional area of...
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 |
Homework Answers
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Two copper wires have the same length but different cross
sectional areas. The cross-sectional area of...
Six copper wires have the lengths and cross-sectional areas listed below. The resistance R of each segment can be calc...
Six
copper wires have the lengths and cross-sectional areas listed
below. The resistance R of each segment can be calculated using, R
= pL/ A
Where p is the resistivity, L is the length of the wire, and A
is the wire's cross-sectional area. Rank the resistances of the
wires from lowest to highest.
At the same temperature, two wires made of pure copper have different resistances. The same voltage...
At the same temperature, two wires made of pure copper have different resistances. The same voltage is applied at the ends of each wire. The wires may differ in Check all that apply. length. cross-sectional area. resistivity. amount of electric current passing through them
One copper wire has a cross sectional area of A and resistance R and length L....
One copper wire has a cross sectional area of A and resistance R and length L. A second copper wire has a length L and cross-sectional area 2A. What is the resistance of the second wire in terms of R? R/2 R 2R 4R Some other value
Four copper wires of equal lengths are connected in series. Their cross sectional areas are 1.00cm²,...
Four copper wires of equal lengths are connected in series. Their cross sectional areas are 1.00cm², 2.00cm², 3.00cm² and 5.00cm². If the voltage of 120V is applied to the arrangement, what is the voltage across the 2.00cm² wire? NB: length of wires could be anything but the length is the same
A copper wire of length L and cross-sectional area A has a resistance of R0. What...
A copper wire of length L and cross-sectional area A has a resistance of R0. What is the resistance of another copper wire with length 6L and cross-sectional area 2A. Give your answer as a multiple of R0. A 18.00 R0 B 0.33 R0 C 6.00 R0 D 3.00 R0 E 1.50 R0
2) Two copper wires have the same voltage across them and the same length, but one...
2) Two copper wires have the same voltage across them and the same length, but one wire has twice the diameter as the other. How much power is dissipated in the wire with twice the diameter compared to the other wire?A) 1/4 as much B) 1/2 as much C) the same amount D) twice as much E) four times as much
two copper conductors have equal length. the cross-sectional area of one conductor is three times that...
two copper conductors have equal length. the cross-sectional area of one conductor is three times that of the other. If the resistance of the conductor having smaller cross-sectional area is 20 ohms, what is the resistance of the other?
Two copper wires have equal cross-sectional area and lengths of 2.0m and 0.50 m, respectively. What...
Two copper wires have equal cross-sectional area and lengths of 2.0m and 0.50 m, respectively. What is the ratio of the current through the shorter wire to that through the longer if both have the same applied voltage? Please explain. Thank you
[VI] The figure shows three wires, made of the same material, with their cross-sectional areas and...
[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
Consider two (1 and 2) tungsten wires both of which have constant circular cross sectional areas...
Consider two (1 and 2) tungsten wires both of which have constant circular cross sectional areas ; we are given the following data: Wire 1: length = L Wire 2: length = L/4 ; diameter = d ; diameter = 2d ; ; resistance = R, resistance = R2 A potential difference (V) applied across wire 1 results in a power dissipation of (P.) and a potential difference (V.) applied across wire 2 results in a power dissi- pation of...
Six
copper wires have the lengths and cross-sectional areas listed
below. The resistance R of each segment can be calculated using, R
= pL/ A
Where p is the resistivity, L is the length of the wire, and A
is the wire's cross-sectional area. Rank the resistances of the
wires from lowest to highest.
2) Two copper wires have the same voltage across them and the same length, but one wire has twice the diameter as the other. How much power is dissipated in the wire with twice the diameter compared to the other wire?A) 1/4 as much B) 1/2 as much C) the same amount D) twice as much E) four times as much
[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
Consider two (1 and 2) tungsten wires both of which have constant circular cross sectional areas ; we are given the following data: Wire 1: length = L Wire 2: length = L/4 ; diameter = d ; diameter = 2d ; ; resistance = R, resistance = R2 A potential difference (V) applied across wire 1 results in a power dissipation of (P.) and a potential difference (V.) applied across wire 2 results in a power dissi- pation of...
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