Wires 1 and 2 are made of the same metal...
a. What is the ratio p2/p1 of the resistivities of the two wires?
b. What is the ratio R2/R1 of the resistances of the two wires?
Homework Answers
The two wires in the segment below have the same diameter but different resistivities ?1 and...
The two wires in the segment below have the same diameter but
different resistivities ?1 and ?2. Current
I passes through the wire. If the ratio of resistivities
is ?1/?2 = 4, what is the ratio of the
electric fields in each wire, E1/E2?
P1
Two wires made of copper and aluminum have the same length and diameter. The wires are...
Two wires made of copper and aluminum have the same length and diameter. The wires are fused together end-to-end to form a single wire. A potential difference is applied to the ends of the wire by a battery so that current flows along the wire. What is the ratio of the electron drift velocity between the two metals, reported as ?
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
5. Two wires, A and B, are made of the same metal and have equal length,...
5. Two wires, A and B, are made of the same metal and have equal length, but the resistance of wire A is 3 times the resistance of wire B. How do their diameters compare? (5pt)
two wires, a and b, have the same length and are made of the same material,...
two wires, a and b, have the same length and are made of the same material, but wire a has one-half the resistance of wire b. what is the ratio of the diameters, da/db?
Consider the two cylindrical wires of lengths l1 =3.8m and l2=2m
Consider the two cylindrical wires of lengths l1 =3.8m and l2=2m are merged back to back as shown in the figure below to form a single wire. The wires have the radii of r1=3mm and r2= 8mm and the current runs along the lengths of the wires. If the thin and the thick wires resistivities are p1=152x10-6Ω.m and p2=201x10-6Ω.m respectively, determine the resistance of the wire. Please express your answer in units of Ω using one decimal places.
The picture shows a battery connected to two wires in parallel. Both wires are made of...
The picture shows a battery connected to two wires in parallel.
Both wires are made of the same material and are of the same
length, but the diameter of wire A is twice the diameter of wire
B.
True or False for the following:
1) The resistance of wire B is four times as large as the
resistance of wire A.
2) The power dissipated in wire A is 16 times the power
dissipated in wire B.
3) The voltage...
Three cylindrical wires are made of the same material. Their lengths and radii are wire 1:...
Three cylindrical wires are made of the same material. Their lengths and radii are wire 1: length 24, 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. 3>2>1 O b. 1>3>2 c. 1>2>3 d. 3 >1 > 2 e. 1 =2>3
Three cylindrical wires are made of the same material. Their lengths and radii are
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 = 2 > 3 d. 1>3> 2 e. 3 >1>2
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
The two wires in the segment below have the same diameter but
different resistivities ?1 and ?2. Current
I passes through the wire. If the ratio of resistivities
is ?1/?2 = 4, what is the ratio of the
electric fields in each wire, E1/E2?
P1
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
5. Two wires, A and B, are made of the same metal and have equal length, but the resistance of wire A is 3 times the resistance of wire B. How do their diameters compare? (5pt)
The picture shows a battery connected to two wires in parallel.
Both wires are made of the same material and are of the same
length, but the diameter of wire A is twice the diameter of wire
B.
True or False for the following:
1) The resistance of wire B is four times as large as the
resistance of wire A.
2) The power dissipated in wire A is 16 times the power
dissipated in wire B.
3) The voltage...
Three cylindrical wires are made of the same material. Their lengths and radii are wire 1: length 24, 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. 3>2>1 O b. 1>3>2 c. 1>2>3 d. 3 >1 > 2 e. 1 =2>3
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