Explanation a) When the length is doubled keeping V and r unchanged, from the formula E = V l , we can say that the value of electric field (E)will become half. Also as the material is not changed so the average relaxation time between two collisions of free electrons will remain unchanged. Thus in this case, we can say from the formula v d → = − e τ m E → , that drift velocity will become half, i.e., v d 2 = v d 1 2 b) By changing r while keeping V and l unchanged, neither E nor τ will change. Therefore the drift velocity will also remain unchanged, i.e...

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ISBN: 9780321733627

Author: Douglas C. Giancoli

Publisher: PEARSON

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Chapter 18, Problem 20Q

To determine

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The effects on the electron drift speed by doubling the length, the radius and the potential drop one by one across a resistor.

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Chapter 18, Problem 19Q

Chapter 18, Problem 1MCQ

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Ch. 18 - Prob. 1OQ Ch. 18 - When an electric cell is connected to a circuit,...Ch. 18 - When a flashlight is operated, what is being used...Ch. 18 - Prob. 3Q Ch. 18 - Prob. 4Q Ch. 18 - Prob. 5Q Ch. 18 - Prob. 6Q Ch. 18 - What happens when aIightbulb burns out?Ch. 18 - Prob. 8Q Ch. 18 - Prob. 9Q

Ch. 18 - Prob. 10Q Ch. 18 - Prob. 11Q Ch. 18 - Prob. 12Q Ch. 18 - Prob. 13Q Ch. 18 - When electric lights are operated on low-frequency...Ch. 18 - Prob. 15Q Ch. 18 - Prob. 16Q Ch. 18 - Prob. 17Q Ch. 18 - Prob. 18Q Ch. 18 - Prob. 19Q Ch. 18 - Prob. 20Q Ch. 18 - Prob. 1MCQ Ch. 18 - Prob. 2MCQ Ch. 18 - Prob. 3MCQ Ch. 18 - Prob. 4MCQ Ch. 18 - Prob. 5MCQ Ch. 18 - Prob. 6MCQ Ch. 18 - Prob. 7MCQ Ch. 18 - Prob. 8MCQ Ch. 18 - Prob. 9MCQ Ch. 18 - Prob. 10MCQ Ch. 18 - Prob. 11MCQ Ch. 18 - A current of 1.60 A flows in a wire. How many...Ch. 18 - A service station charges a battery using a...Ch. 18 - Prob. 3P Ch. 18 - What is the resistance of a toaster if 120 V...Ch. 18 - Prob. 5P Ch. 18 - Prob. 6P Ch. 18 - (a) What is the current in the element of an...Ch. 18 - Prob. 8P Ch. 18 - Prob. 9P Ch. 18 - A 4.5-V battery is connected to a bulb whose...Ch. 18 - Prob. 11P Ch. 18 - What is the diameter of a 1.00-m length of...Ch. 18 - What is the resistance of a 5.4-m length of copper...Ch. 18 - Prob. 14P Ch. 18 - Prob. 15P Ch. 18 - A certain copper wire has a resistance of 15.0 ....Ch. 18 - Compute the voltage drop along a 21-m length of...Ch. 18 - Two aluminum wires have the same resistance. If...Ch. 18 - Prob. 19P Ch. 18 - Prob. 20P Ch. 18 - Prob. 21P Ch. 18 - Prob. 22P Ch. 18 - Prob. 23P Ch. 18 - Prob. 24P Ch. 18 - Prob. 25P Ch. 18 - A 10.0-m length of wire consists of 5.0 m of...Ch. 18 - What is the maximum power consumption of a 3.0-V...Ch. 18 - The heating element of an electric oven is...Ch. 18 - What is the maximum voltage that can be applied...Ch. 18 - Prob. 30P Ch. 18 - Prob. 31P Ch. 18 - Prob. 32P Ch. 18 - A 120-V hair dryer has two settings: 950 W and...Ch. 18 - Prob. 34P Ch. 18 - Prob. 35P Ch. 18 - Prob. 36P Ch. 18 - Prob. 37P Ch. 18 - Prob. 38P Ch. 18 - Prob. 39P Ch. 18 - Prob. 40P Ch. 18 - Prob. 41P Ch. 18 - Prob. 42P Ch. 18 - Prob. 43P Ch. 18 - Prob. 44P Ch. 18 - Prob. 45P Ch. 18 - The current in an electromagnet connected to a...Ch. 18 - Prob. 47P Ch. 18 - Prob. 48P Ch. 18 - Prob. 49P Ch. 18 - Prob. 50P Ch. 18 - Prob. 51P Ch. 18 - Prob. 52P Ch. 18 - Determine (a) the maximum instantaneous power...Ch. 18 - Prob. 54P Ch. 18 - Prob. 55P Ch. 18 - A 4.80-m length of 2.0-mm-diameter wire carries a...Ch. 18 - Prob. 57P Ch. 18 - Prob. 58P Ch. 18 - Prob. 59P Ch. 18 - Prob. 60P Ch. 18 - Prob. 61GP Ch. 18 - Prob. 62GP Ch. 18 - Prob. 63GP Ch. 18 - Prob. 64GP Ch. 18 - Prob. 65GP Ch. 18 - Prob. 66GP Ch. 18 - A small city requires about 15 MW of power Suppose...Ch. 18 - Prob. 68GP Ch. 18 - Prob. 69GP Ch. 18 - Prob. 70GP Ch. 18 - Prob. 71GP Ch. 18 - Prob. 72GP Ch. 18 - Prob. 73GP Ch. 18 - V is applied to two different conductors made of...Ch. 18 - Prob. 75GP Ch. 18 - Prob. 76GP Ch. 18 - Prob. 77GP Ch. 18 - A 15 2-?resistor is made from a coil of copper...Ch. 18 - Prob. 79GP Ch. 18 - Prob. 80GP Ch. 18 - Prob. 81GP Ch. 18 - Prob. 82GP Ch. 18 - Prob. 83GP Ch. 18 - Prob. 84GP Ch. 18 - Prob. 85GP Ch. 18 - If a wire of resistance R is stretched uniformly...Ch. 18 - Prob. 87GP Ch. 18 - Prob. 88GP Ch. 18 - Prob. 89GP Ch. 18 - Prob. 90GP Ch. 18 - Prob. 91GP

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