Two wires of the same material and with the same length have different diameters. Wire A has twice the diameter of wire B. If the resistance of wire B is R, what is the resistance of wire A?  R 2R R/2 R/4

Q: When a resistor is connected to a 12 V source, it draws a 185 mA current. The same resistor…

A: Ans:- Image-1

Q: 20. A conductor of cross-sectional area A, length l, and resistivity ρ has resistance R. What is the…

A:

Q: order to triple its resistance, by how much would you have to increase the temperature of a piece of…

A:

Q: 1. What is the resistance of a 30 m silver wire with a 2 mm diameter? 2. A carbon wire with a 3 mm…

A:

Q: 2. An aluminum (p=2.7x10-2m) wire has a cross-sectional area of 5.1x107 m?. A. If the wire is…

A: (A) Let A be the cross-sectional area of the aluminium wire. Write the expression for the circular…

Q: What is the resistance of a light bulb if 0.50 A flows through it when 120 V is connected across it?

A: As per the answering guidelines we will solve only first problem. Please upload the other problems…

Q: #1. Two wires, A and B, are made of the same metal and have equal length, but the resistance of wire…

A:

Q: Wire C and wire D are made from different materials and have length L. = LD-1.0 m (Figure B). The…

A:

Q: Three resistors of resistances R1 = 14.8 Ω, R2 = 70.3 Ω, and R3 = 39.7 Ω are connected in parallel.…

A:

Q: 1. Suppose you wish to fabricate a uniform wire out of 1.05 g of copper. If the wire is to have a…

A: Solution-1

Q: Suppose the resistance of a wire is R Ω. What will be the resistance of another wire of the same…

A: The resistance is given by,  R=ρLAR=ρLπr2

Q: A cylindrical conductor has resistance of R0 = 120 Ω. It has length L, radius of the cross section…

A:

Q: A wire of length L and cross-sectional area A has a resistivity p. Which of the following formulas…

A: Given : Length of a wire = L Cross-sectional area = A Resistivity = ρ

Q: The resistance of the tungsten wire in a bulb is 20ohm when the bulb is not lit (T=20C) and 180ohm…

A: We know that relation between resistance and temperature is given by: R = R0*(1 + alpha*(T - T0))…

Q: 1.There are two wires, one is made of copper and the other one is silver. These two wires of the…

A: We are allowed to give the explanation of first question only which is given below.  Please repost…

Q: 1. How does resistance change if the length of the wire is increased? a. no change b. decreased c.…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Need help solving these problems!

A: Given:- 1a)current = o.7 A time = 1 min. Now, charge (q)= 42C

Q: A long uniform rod of electrically resistive material has a resistance of Roriginal =1Ω. The rod is…

A: Suppose a  long uniform rod of electrically resistive material has a resistance of Roriginal=1Ω. The…

Q: Two aluminum wires have the same resistance. If one has twice the length of the other. What is the…

A: "Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: What should be the diameter of an aluminum wire for its resistance to be equal to that of a copper…

A: Resistance of both square is equal Length of both is equal let length of wire be l Resistivity of…

Q: What is the resistance of a 4.5-m length of copper wire 1.5 mm in diameter? (Ans. 4.3x10-2 Q) I

A: Given: Length of the wire (L)=4.5 m The diameter of the wire (d) = 1.5 mm The radius of the wire (r)…

Q: Suppose you wish to fabricate a uniform wire from 1.20 g of copper. The wire is to have a resistance…

A: The density of an object is its mass per unit volume .It can be written as…

Q: A block of carbon, 1.0 cm by 2.0 cm by 5.0 cm, has a resistance of 0.015 Ω between its two smaller…

A: The resistivity of carbon is 0.0051 ohm-m.

Q: 6. Two conductors are made of the same material and have the same length. Conductor A is a solid…

A:

Q: You’ve made the finals of the Science Olympics!  As one of your tasks, you’re given 1.0 g of copper…

A:

Q: Two aluminum wires have the same resistance. If one has twice the length of the other. What is the…

A: Let the length of the shorter wire is L having diameter d.  And length of the longer wire is 2L…

Q: 25.69      A 1.50-m cylinder of radius 1.10 cm is made of a complicated mixture of materials. Its…

A:

Q: hat is the electrical resistance of a copper wire that has a radius of 0.80 mm and a length of 2.0…

A: Given: The radius of the wire is 0.8 mm. The length of the wire is 2 m. The resistivity of the wire…

Q: Currents up to 30 A can be carried by 10 gauge copper wire. (a) What is the resistance of 80 m of 10…

A:

Q: What is the resistance of Part A A 2.0-m-long gold wire that is 0.10 mm in diameter? Express your…

A:

Q: A1. A hair blower contains a heating element which has a resistance of 57 Ω. This heating element is…

A: Resistance, R = 57 Ω  Potential difference, V = 220 V

Q: 2. What is the resistance of a 5.4-m length of copper wire 1.5 mm in diameter? r = 1.68 x10-8 W×m

A:

Q: a)(QUESTION 2) Determine the length (in mm) of a gold conductor that has a resistance of 0.018 Ω and…

A: Resistance of gold, Rg = 0.018 ohm Cross-sectional area of gold conductor, Ag = 3.4 x 10-9 m2…

Q: A rod (length = 40 cm) with a rectangular cross section (1.5 mm X2.0 mm) has a resistance of 0.20…

A:

Q: A wire having an area of cross section = 10 m? and another wire having an area of cross section = 15…

A:

Q: Red wire has area of cross section = 10 square meter while Green wire has a cross section = 15…

A: Given data:  Area of cross section of red wire = 10 m2 Area of cross section of green wire = 15 m2…

Q: 2. A cylindrical metal rod is 1.90 m long and 5.50 mm in diameter. The resistance between its two…

A:

Q: Two aluminum wires have the same resistance. If one has twice the length of the other. What is the…

A: Let L be the length of the shorter wire and d be diameter.  Then, Length of the longer wire will be…

Q: Two aluminum wires have the same resistance. If one has twice the length of the other. What is the…

A: Given: The resistance of both wires is the same. R1=R2 The length of the second wire is twice the…

Q: 9. What does it mean If material has a positive temperature coefficient? A. the resistance increases…

A: #9 The relation between temperature coefficient, resistance, and temperature difference is given by,…

Q: A length of #8 copper wire (radius = 1.63 mm) has a mass of 24.0 kg and a resistance of 2.061 ohm…

A: Radius of wire is r = 1.63 mm Mass of the wire is m = 24 kg Resistance per km is R = 2.061 ohms

Q: Two aluminum wires have the same resistance. If one has twice the length of the other. What is the…

A: A The wires have same resistivity and same resistance so the equation becomes other.…

Q: A fluid-filled catheter is 0.175 m long and has a diameter of 2.5 mm. What is the resistance(in…

A:

Q: 5. How many 10 k2 resistor should you connect in parallel to have a total resistance of 2.5 kQ when…

A:

Q: Two aluminum wires have the same resistance. If one has twice the length of the other. What is the…

A: Given, Two aluminum wires have the same resistance.

Q: A cylindrical metallic wire with a resistance of 12 Ω has a cross-sectional area of 4.0 mm2 and a…

A: Initially, Resistance of cylindrical metalic wire , R1 = 12 ohm  Cross sectional area, A1 = 4 mm2…

Q: Two aluminum wires have the same resistance. If one has twice the length of the other. What is the…

A: Given data: Resistance=R1=R2=R Length l1=2l2   The resistance of the wire is given by,…

Q: An aluminum rod with a square cross section is 1.8 m long and 6.2 mm on edge. (a) What is the…

A:

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.