Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Textbook Question
Chapter 35, Problem 30A
To connect a pair of resistors so that their equivalent resistance will be greater than the resistance of either one, should you connect them in series or in parallel?
Expert Solution & Answer
To determine
Whether the pair of resistors for greater equivalent resistance, then each resistance should connect in parallel or series.
Explanation of Solution
Introduction:
In a series circuit, the resistances are simply added to find the equivalent resistance while the inverse of resistances is added to find the equivalent resistance in the parallel circuit.
The inverse of the resistance becomes less than the resistance itself. So, the summation of the resistances in the parallel circuit to find the equivalent resistance also gives less value of equivalent resistance than the value of each resistance in the parallel circuit.
The resistances are added simply in a series circuit to find equivalent resistance. So, the value of the equivalent resistance of the series circuit is always greater than each resistance in the series circuit.
Conclusion:
The pair of resistors should connect in a series connection to find the greater equivalent resistance of the circuit.
Chapter 35 Solutions
Conceptual Physics: The High School Physics Program
Ch. 35 - Are all the electrons flowing in a circuit...Ch. 35 - Why must there be no gaps in an electric circuit...Ch. 35 - Distinguish between a series circuit and a...Ch. 35 - If three lamps are connected in series to a 6-volt...Ch. 35 - If one of three lamps blows out when connected in...Ch. 35 - If three lamps are connected in parallel to a...Ch. 35 - If one of three lamps blows out when connected in...Ch. 35 - a. In which case will there be more current in...Ch. 35 - What happens to the total circuit resistance when...Ch. 35 - What is the equivalent resistance of a pair of...
Ch. 35 - Why does the total circuit resistance decrease...Ch. 35 - What does it mean when you say that lines in a...Ch. 35 - What is the function of a fuse or circuit breaker...Ch. 35 - Why will too many electric devices operating at...Ch. 35 - What is meant by a short circuit?Ch. 35 - The resistors in the circuits below are all...Ch. 35 - The circuit below contains resistors R1, R2, and...Ch. 35 - The resistors in the circuits below are 10 each....Ch. 35 - Calculate the equivalent resistance of two 6-...Ch. 35 - Calculate the equivalent resistance (using the...Ch. 35 - Calculate the current in a 12-V battery that...Ch. 35 - Calculate the current in a 12-V battery that...Ch. 35 - Calculate the current in a 48-V battery that...Ch. 35 - Calculate the current in a 48-V battery that...Ch. 35 - One example of a water system is a garden hose...Ch. 35 - Sometimes you hear someone say that a particular...Ch. 35 - Why are the wingspans of birds a consideration in...Ch. 35 - Your lab partner says that a battery provides not...Ch. 35 - Will the current in a lightbulb connected to a...Ch. 35 - To connect a pair of resistors so that their...Ch. 35 - To connect a pair of resistors so that their...Ch. 35 - Hector says that adding bulbs in series to a...Ch. 35 - Consider a pair of flashlight bulbs connected to a...Ch. 35 - Harry asks whether a battery will run down slower...Ch. 35 - As more and more lamps are connected in series to...Ch. 35 - As more and more lamps are connected in parallel...Ch. 35 - If several bulbs are connected in series to a...Ch. 35 - Are automobile headlights wired in parallel or in...Ch. 35 - Why are household appliances almost never...Ch. 35 - In the circuit shown, how do the brightnesses of...Ch. 35 - A number of lightbulbs are to be connected to a...Ch. 35 - Are these circuits equivalent to one another? Why...Ch. 35 - A battery has internal resistance, so if the...Ch. 35 - A three-way bulb uses two filaments to produce...Ch. 35 - How does the line current compare with the total...Ch. 35 - Your friend says that electric current takes the...Ch. 35 - A 60-W bulb and a 100-W bulb are connected in...Ch. 35 - A 30- resistor is connected to a 240-V source. How...Ch. 35 - A lightbulb connected to a 3.0-V battery draws 1.2...Ch. 35 - A lantern battery is connected to a 4- device that...Ch. 35 - A 16- loudspeaker and an 8- loudspeaker are...Ch. 35 - Consider the combination series and parallel...Ch. 35 - How many 4- resistors must be connected in...Ch. 35 - What is the current in the battery of the circuit...Ch. 35 - The rear window defrosters on automobiles are made...Ch. 35 - Prob. 56ACh. 35 - The same voltage V is impressed on each of the...Ch. 35 - Show how the expression given in Question 57, when...Ch. 35 - Obtain several drinking straws. Take a deep breath...
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