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An Introduction to Physical Science

14th Edition
James Shipman + 3 others
Publisher: Cengage Learning
ISBN: 9781305079137

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Chapter
Section
BuyFindarrow_forward

An Introduction to Physical Science

14th Edition
James Shipman + 3 others
Publisher: Cengage Learning
ISBN: 9781305079137
Chapter 8, Problem 11SA
Textbook Problem
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Compare the safety features of (a) fuses, (b) circuit breakers, (c) three-prong plugs, and (d) polarized plugs.

(a)

To determine
The safety features of fuses.

Explanation of Solution

For commercial purposes and in electrical engineering, the electricity is the main building block. Because of this, the safety is the most important objective. There are various reliable safety devices which can be used to prevent fire and electric shock (electrocution).

A fuse is an electric safety device with high conductivity or low resistivity that can protect the flow of current passing through the circuit against overloading due to overcurrent...

(b)

To determine
The safety features of circuit breakers.

(c)

To determine
The safety features of three-prong plugs.

(d)

To determine
The safety features of polarized plugs.

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Chapter 8 Solutions

An Introduction to Physical Science
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Ch. 8.5 - What are the two basic principles of...Ch. 8.5 - What's the difference between a motor and a...Ch. 8.5 - Suppose the transformer in Example 8.3 were...Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - Which of the following has a positive (+) charge?...Ch. 8 - Two equal positive charges are placed equidistant...Ch. 8 - In a dc circuit, how do electrons move? (8.2) (a)...Ch. 8 - What is a unit of voltage? (8.2) (a) joule (b)...Ch. 8 - The ohm is another name for which of the...Ch. 8 - Appliances with heating elements require which of...Ch. 8 - The greatest equivalent resistance occurs when...Ch. 8 - Given three resistances, the greatest current...Ch. 8 - If you look directly at the north pole end of a...Ch. 8 - What is the variation in the location of the...Ch. 8 - What type of energy conversion does a motor...Ch. 8 - What type of energy conversion does a generator...Ch. 8 - Which of the following is true of a step-up...Ch. 8 - A transformer with more windings on the primary...Ch. 8 - An object with a deficiency of electrons is ___...Ch. 8 - ___ are neither good conductors nor good...Ch. 8 - The unit of watt can be expressed in electrical...Ch. 8 - Voltage is defined as work per___. (8.2)Ch. 8 - An electric circuit that is not a complete path is...Ch. 8 - The unit of resistance is the ___. (8.2)Ch. 8 - Another name for joule heat is ___ losses. (8.2)Ch. 8 - A battery-powered device uses ___ current. (8.3)Ch. 8 - In a circuit with resistances connected in...Ch. 8 - A material ceases to be ferromagnetic above the...Ch. 8 - Magnetic north is generally in the direction of...Ch. 8 - A step-up transformer has more windings on the ___...Ch. 8 - Which two particles that make up atoms have about...Ch. 8 - A large charge +Q and a small charge q are a short...Ch. 8 - Explain how a charged rubber comb attracts bits of...Ch. 8 - Why do clothes sometimes stick together when...Ch. 8 - Distinguish between electric potential energy and...Ch. 8 - What are two things that are required for there to...Ch. 8 - How does joule heat vary with increasing and...Ch. 8 - If the drift velocity in a conductor is so small,...Ch. 8 - Distinguish between alternating current and direct...Ch. 8 - Why are home appliances connected in parallel...Ch. 8 - Compare the safety features of (a) fuses, (b)...Ch. 8 - Is it safe to stay inside a car during a lightning...Ch. 8 - Sometimes resistances in a circuit are described...Ch. 8 - Why do iron filings show magnetic field patterns?Ch. 8 - Compare the law of charges and the law of poles.Ch. 8 - (a) What is a ferromagnetic material? (b) Why does...Ch. 8 - What is the principle of an electromagnet?Ch. 8 - (a) What does the Earths magnetic field resemble,...Ch. 8 - Describe the basic principle of a dc electric...Ch. 8 - What happens (a) when a proton moves parallel to a...Ch. 8 - What is the principle of a transformer, and how...Ch. 8 - What would happen if electric power were...Ch. 8 - Why can birds perch on high-voltage power lines...Ch. 8 - Body injury from electricity depends on the...Ch. 8 - Visualize the connections and give answers in the...Ch. 8 - What is the cause of static cling in clothes, and...Ch. 8 - Two negative charges of 1 C each are placed at...Ch. 8 - Answer both parts of Question 2 for a charge of +1...Ch. 8 - An old saying about electrical safety states that...Ch. 8 - The following are incandescent light bulb...Ch. 8 - Show that the resistance that is equivalent to two...Ch. 8 - What happens when you cut a bar magnet in half? If...Ch. 8 - Suppose you are on an expedition to locate the...Ch. 8 - How many electrons make up one coulomb of charge?...Ch. 8 - An object has one million more electrons than...Ch. 8 - What are the forces on two charges of +0.60 C and...Ch. 8 - Find the force of electrical attraction between a...Ch. 8 - There is a net passage of 4.8 1018 electrons by a...Ch. 8 - A current of 1.50 A flows in a conductor for 6.5...Ch. 8 - To separate a 0.25-C charge from another charge,...Ch. 8 - What is the voltage of the 0.25-C charge in...Ch. 8 - If an electrical component with a resistance of 50...Ch. 8 - What battery voltage is necessary to supply 0.50 A...Ch. 8 - A car radio draws 0.25 A of current in the autos...Ch. 8 - A flashlight uses batteries that add up to 3.0 V...Ch. 8 - How much does it cost to run a 1500-W hair dryer...Ch. 8 - A refrigerator using 1000 W runs one-eighth of the...Ch. 8 - A 24- component is connected to a 12-V battery....Ch. 8 - In Exercise 15, using the equation given in the...Ch. 8 - The heating element of an iron operates at 110 V...Ch. 8 - A 100-W light bulb is turned on. It has an...Ch. 8 - Two resistors with values of 25 and 35 ,...Ch. 8 - Suppose the two resistors in Exercise 19 were...Ch. 8 - A student in the laboratory connects a 10-...Ch. 8 - The student in Exercise 21 repeats the experiment...Ch. 8 - A 30.0- resistor and a 60.0- resistor in series...Ch. 8 - A 30.0- resistor and a 60.0- resistor in parallel...Ch. 8 - A transformer has 300 turns on its secondary and...Ch. 8 - A transformer has 600 turns on its primary and 200...Ch. 8 - A transformer with 1000 turns in its primary coil...Ch. 8 - A power company transmits current through a...

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